Quick Answer: The best synonyms for quickly include rapidly, swiftly, speedily, promptly, immediately, hastily, briskly, at once, without delay, and in a hurry. Use rapidly for fast change, swiftly for smooth movement, promptly for polite or professional timing, immediately for urgent action, hastily for rushed behavior, and briskly for energetic speed.
Pronunciation and Word Details
Word: Quickly.
Pronunciation: /ˈkwɪk.li/.
Part of Speech: Adverb.
Meaning: Quickly means at a fast speed, in a short time, or without delay.
US Pronunciation:
UK Pronunciation:
What Does “Quickly” Mean?
Quickly means doing something fast, soon, or without wasting time. It is an adverb because it describes how an action happens.
Quickly can describe physical movement, mental response, work speed, time, change, progress, or reaction. In a sentence, it usually modifies a verb, such as “run quickly,” “answer quickly,” “move quickly,” or “finish quickly.”
The word can also show urgency. For example, “Leave quickly” sounds more urgent than “Leave soon.” It can describe speed in both casual and formal situations, but some synonyms are better for specific tones.
Meaning, Tone, and Context of “Quickly”
Quickly has a neutral and common tone. It is easy to understand and works well in everyday speech, school writing, business writing, instructions, stories, and general explanations.
In casual conversation, quickly sounds natural. For example, “I will call you quickly” means the speaker will call soon or without delay. In formal writing, words like promptly, rapidly, or immediately may sound more precise.
Quickly can also feel urgent, active, or practical depending on the sentence. “Respond quickly” sounds polite but firm. “Run quickly” focuses on speed. “The situation changed quickly” describes fast development.
When and How to Use “Quickly”
For Speed: Use quickly when an action happens at a fast pace.
Example: She walked quickly to catch the bus.
For Urgency: Use quickly when something must happen without delay.
Example: Please leave the building quickly.
For Fast Response: Use quickly when someone answers, reacts, or replies soon.
Example: He responded quickly to the question.
For Fast Change: Use quickly when a situation develops in a short time.
Example: The weather changed quickly in the evening.
For Work or Tasks: Use quickly when someone completes work in less time.
Example: The team finished the report quickly.
For Movement: Use quickly when someone or something moves fast.
Example: The rabbit ran quickly across the garden.
Best Synonyms for Quickly
Rapidly: Very fast, especially for change, growth, or movement.
Example: The river level rose rapidly after the rain.
Swiftly: Smoothly and fast, often with controlled movement.
Example: The dancer moved swiftly across the stage.
Speedily: Fast and without unnecessary delay.
Example: The matter was handled speedily.
Promptly: Soon, on time, or without delay.
Example: Please reply promptly to the request.
Immediately: Right away or at once.
Example: The doctor arrived immediately.
Hastily: Too quickly or in a rushed way.
Example: He packed hastily and forgot his keys.
Briskly: Quickly and with energy.
Example: She walked briskly through the park.
At Once: Immediately or right now.
Example: Begin the work at once.
Without Delay: With no waiting.
Example: The form must be submitted without delay.
In a Hurry: Quickly because there is little time.
Example: He ate breakfast in a hurry.
50 Synonyms for Quickly with Short Meanings
- Rapidly: At a very fast speed.
- Swiftly: Smoothly and fast.
- Speedily: Quickly and without delay.
- Promptly: Soon and on time.
- Immediately: Right away.
- Instantly: At that exact moment.
- Hastily: In a rushed manner.
- Briskly: Quickly with energy.
- Hurriedly: In a hurry.
- Fast: At high speed.
- Soon: In a short time.
- At Once: Immediately.
- Right Away: Without waiting.
- Without Delay: With no pause.
- In a Hurry: With little time available.
- In No Time: Very soon.
- Straightaway: Immediately.
- Forthwith: Immediately, in formal style.
- Directly: Soon or immediately.
- Expeditiously: Efficiently and quickly.
- Fleetly: Lightly and swiftly.
- Nimbly: Quickly and easily.
- Agilely: Quickly with skillful movement.
- Readily: Quickly and willingly.
- Smartly: Quickly and neatly.
- Energetically: Quickly with strong effort.
- Lively: In an active and quick way.
- Sharply: Quickly and suddenly.
- Suddenly: Happening very quickly and unexpectedly.
- Abruptly: Quickly and unexpectedly.
- Rapid Fire: Very fast and continuous.
- Posthaste: As quickly as possible.
- Pronto: Very soon or right away.
- Quickly Enough: Fast enough for the situation.
- Before Long: Soon.
- Shortly: Soon after a time.
- Presently: Soon, in a formal or old style.
- Momentarily: Very soon.
- In Short Order: Very soon and efficiently.
- With Speed: In a fast manner.
- At Speed: Moving fast.
- Like Lightning: Extremely fast.
- Like a Flash: Very quickly.
- Full Speed: As fast as possible.
- Rapid Pace: At a fast rate.
- Quick Time: In a short period.
- Urgently: Quickly because action is important.
- Decisively: Quickly and firmly.
- Efficiently: Quickly with good organization.
- Without Hesitation: Quickly and confidently.
Read Also:
Synonyms for After
Synonyms for Quickly by Context
When Quickly Means At High Speed
Use these synonyms when describing fast movement, fast action, or fast physical speed.
Rapidly: The train moved rapidly through the countryside.
Swiftly: The bird flew swiftly over the trees.
Fast: The athlete ran fast toward the finish line.
Briskly: She walked briskly to the office.
Fleetly: The deer moved fleetly through the forest.
When Quickly Means Without Delay
Use these words when the main idea is urgency or no waiting.
Immediately: Please report the issue immediately.
Promptly: The manager answered promptly.
At Once: The students began the test at once.
Right Away: Send the message right away.
Without Delay: The payment should be made without delay.
When Quickly Means In a Rushed Way
Use these alternatives when the action feels careless, stressed, or too fast.
Hastily: He wrote the note hastily.
Hurriedly: She left the room hurriedly.
In a Hurry: They packed their bags in a hurry.
Abruptly: The meeting ended abruptly.
Suddenly: The lights went out suddenly.
When Quickly Means Efficiently
Use these synonyms when speed is connected with good organization, skill, or smart action.
Expeditiously: The request was processed expeditiously.
Efficiently: The team worked efficiently.
Smartly: He solved the problem smartly.
Readily: She readily accepted the task.
In Short Order: The repairs were completed in short order.
When Quickly Means Very Soon
Use these alternatives when quickly refers to time rather than physical speed.
Soon: We will begin soon.
Shortly: The speaker will arrive shortly.
Before Long: Before long, the room became quiet.
Momentarily: The results will be available momentarily.
In No Time: The children finished their snacks in no time.
When Quickly Means With Skillful Movement
Use these words when speed is graceful, controlled, or skillful.
Nimbly: The cat jumped nimbly onto the wall.
Agilely: The player moved agilely around the defenders.
Swiftly: The worker moved swiftly through the task.
Lively: The children danced lively across the room.
Another Word for Quickly
The best single replacement for quickly is often rapidly because it clearly shows fast speed and works in many contexts. However, the best alternative depends on the meaning. Use promptly for professional timing, immediately for urgency, swiftly for smooth movement, and hastily when the action is rushed or careless.
Original: The news spread quickly.
Better Option: The news spread rapidly.
Original: Please answer quickly.
Better Option: Please answer promptly.
Original: Leave the room quickly.
Better Option: Leave the room immediately.
Original: She packed quickly and forgot her book.
Better Option: She packed hastily and forgot her book.
When Not to Use “Quickly”
Do not use quickly when another word gives a clearer meaning. Quickly is useful, but it can sound basic or repetitive when used too often.
Weak: The company grew quickly.
Better: The company grew rapidly.
Weak: Please reply quickly.
Better: Please reply promptly.
Weak: The nurse came quickly.
Better: The nurse came immediately.
Weak: He wrote quickly and made many mistakes.
Better: He wrote hastily and made many mistakes.
Weak: She moved quickly across the stage.
Better: She moved swiftly across the stage.
Quickly may also sound unclear when you need to show whether something was fast, urgent, sudden, careless, or efficient. Choose a synonym that matches the exact situation.
Words Commonly Confused With Quickly
Quickly vs Fast: Quickly is an adverb used to describe an action, while fast can be an adjective or adverb. “She runs quickly” and “She runs fast” are both natural.
Quickly vs Rapidly: Quickly is general, while rapidly often describes fast change, growth, movement, or development.
Quickly vs Promptly: Quickly focuses on speed, while promptly focuses on doing something soon, on time, or without delay.
Quickly vs Immediately: Quickly can mean fast or soon, while immediately means right away with no waiting.
Quickly vs Hastily: Quickly is neutral, while hastily suggests rushing, carelessness, or pressure.
Quickly vs Swiftly: Quickly is general, while swiftly often suggests smooth, controlled, or graceful speed.
Quickly vs Suddenly: Quickly describes speed, while suddenly describes something unexpected.
Which Synonym Should You Choose?
Choose rapidly when writing about growth, change, progress, movement, or development.
Choose swiftly when describing smooth, graceful, or controlled movement.
Choose promptly when writing formal messages, polite requests, instructions, or professional communication.
Choose immediately when the action must happen right now.
Choose hastily when someone acts too fast and may make mistakes.
Choose briskly when describing energetic walking, speaking, or movement.
Choose speedily when you want a clear but slightly formal word for fast action.
Choose expeditiously when writing in a formal, official, or administrative tone.
Choose soon when quickly refers to a short time from now.
Choose right away when writing in a simple and conversational style.
Real Life Examples of “Quickly” in Sentences
Original: She quickly answered the question.
Better Option: She promptly answered the question.
Original: The fire spread quickly.
Better Option: The fire spread rapidly.
Original: He quickly left the room.
Better Option: He left the room immediately.
Original: The child quickly ran to the door.
Better Option: The child ran swiftly to the door.
Original: They quickly completed the work.
Better Option: They completed the work efficiently.
Original: She quickly packed her bag.
Better Option: She packed her bag hastily.
Original: The doctor quickly checked the report.
Better Option: The doctor promptly checked the report.
Original: The clouds quickly covered the sky.
Better Option: The clouds rapidly covered the sky.
Original: He quickly walked through the hallway.
Better Option: He walked briskly through the hallway.
Original: The team quickly solved the issue.
Better Option: The team solved the issue in short order.
Synonym Groups and Usage Differences
Speed Group
This group includes rapidly, swiftly, fast, speedily, and at speed. Use these words when the main idea is high speed.
Example: The vehicle moved rapidly along the road.
Urgency Group
This group includes immediately, at once, right away, without delay, and straightaway. Use these words when action is needed now.
Example: The warning should be followed immediately.
Polite Timing Group
This group includes promptly, shortly, soon, and presently. Use these words in messages, requests, instructions, and formal communication.
Example: Please return the form promptly.
Rushed Action Group
This group includes hastily, hurriedly, in a hurry, and abruptly. Use these words when the speed feels pressured, sudden, or careless.
Example: He answered hastily and misunderstood the question.
Skillful Movement Group
This group includes nimbly, agilely, fleetly, and swiftly. Use these words when the movement is quick and controlled.
Example: The dancer moved nimbly across the floor.
Efficient Action Group
This group includes efficiently, expeditiously, smartly, and in short order. Use these when fast action is also organized and effective.
Example: The team handled the request expeditiously.
Antonyms of Quickly
The opposite of quickly depends on the context. If quickly means fast, the opposite is slowly. If it means without delay, the opposite is late or eventually. If it means urgently, the opposite may be calmly or gradually.
Slowly: At a low speed.
Gradually: Step by step over time.
Leisurely: In a relaxed and unhurried way.
Sluggishly: Slowly and with little energy.
Late: After the expected time.
Eventually: After a long time.
Delayed: Made to happen later.
Reluctantly: Slowly because of unwillingness.
Carefully: With attention, sometimes not fast.
Calmly: Without rush or panic.
Comparison: Quickly vs Related Words
Quickly vs Rapidly
Quickly is a general word for fast action. Rapidly often works better for changes, increases, decreases, movement, and development.
Example With Quickly: The water level rose quickly.
Example With Rapidly: The water level rose rapidly.
Quickly vs Promptly
Quickly focuses on speed. Promptly focuses on responding or acting soon, usually in a polite or professional way.
Example With Quickly: She answered quickly.
Example With Promptly: She answered promptly.
Quickly vs Immediately
Quickly can mean fast or soon. Immediately means right now, with no delay at all.
Example With Quickly: He came quickly.
Example With Immediately: He came immediately.
Quickly vs Hastily
Quickly is neutral. Hastily means too fast and often suggests carelessness.
Example With Quickly: She wrote quickly.
Example With Hastily: She wrote hastily and missed several details.
Quickly vs Swiftly
Quickly is broad and simple. Swiftly often suggests smooth, graceful, or controlled speed.
Example With Quickly: The bird moved quickly.
Example With Swiftly: The bird moved swiftly across the sky.
Quickly vs Soon
Quickly describes how fast an action happens. Soon describes when something will happen.
Example With Quickly: Finish the work quickly.
Example With Soon: The work will begin soon.
Common Phrases and Expressions With Quickly
Move Quickly: Act or travel at a fast speed.
Think Quickly: React mentally in a short time.
Act Quickly: Take action without delay.
Respond Quickly: Reply soon or without waiting.
Work Quickly: Complete tasks at a fast pace.
Change Quickly: Become different in a short time.
Grow Quickly: Increase or develop fast.
Learn Quickly: Understand something in a short time.
Leave Quickly: Go away fast or urgently.
Quickly Realized: Understood something soon.
Common Mistakes to Avoid
A common mistake is using quickly too many times in the same paragraph. Repetition makes writing sound plain. Use rapidly, promptly, swiftly, or immediately when they fit better.
Another mistake is choosing a synonym that changes the meaning. Hastily does not simply mean quickly. It often suggests rushing or carelessness. Use it only when that meaning is intended.
Do not use immediately unless the action happens right away. If something happens after a short time, soon or shortly may be more accurate.
Avoid using fastly in standard English. The correct common forms are quickly or fast.
Also avoid formal words in casual sentences when they sound unnatural. “Please come expeditiously” sounds too stiff in everyday speech. “Please come quickly” or “Please come right away” sounds better.
Conclusion
Understanding synonyms for quickly helps you choose clearer words for speed, urgency, movement, response, and timing. Use rapidly for fast change, swiftly for smooth movement, promptly for polite action, immediately for urgency, and hastily for rushed behavior. Quickly is useful and natural, but stronger synonyms can make your writing more precise. The best choice always depends on the sentence, tone, and exact meaning you want to express.
FAQs About Synonyms for Quickly
What are the best synonyms for quickly?
The best synonyms for quickly are rapidly, swiftly, speedily, promptly, immediately, hastily, briskly, right away, and without delay.
What is another word for quickly in formal writing?
A good formal synonym for quickly is promptly when talking about response or timing. Use rapidly for fast change and expeditiously for efficient action.
What is a stronger word than quickly?
Immediately is stronger when you mean right now. Rapidly is stronger when describing fast growth, change, or movement.
What is the difference between quickly and rapidly?
Quickly is a general adverb for fast action. Rapidly is often used for fast changes, increases, decreases, movement, or development.
Can I use fast instead of quickly?
Yes, fast can often replace quickly in casual speech. For example, “She runs fast” is natural. In formal writing, quickly or rapidly may sound better.
What is a synonym for quickly in polite requests?
Use promptly for polite or professional requests. For example, “Please reply promptly” sounds clear and respectful.
What is the opposite of quickly?
The main opposite of quickly is slowly. Other opposites include gradually, leisurely, late, eventually, and delayed, depending on the sentence.
