How quickly is “immediately”—and what if you need a word that expresses that urgency more precisely?
Sometimes you mean right away, while other situations call for instantly, promptly, or without delay. Although these expressions are similar, each can create a slightly different tone.
If you’re searching for synonyms for immediately, the best alternative depends on the context. Instantly can emphasize that something happens in a moment, promptly suggests quick and efficient action, while at once and right away are more natural in everyday English.
Knowing these differences can help you avoid repetition and make your writing clearer and more effective.
In this guide, you’ll discover the best synonyms for immediately, with clear meanings, subtle differences, and easy examples. You’ll also learn which alternatives fit best in conversations, emails, essays, professional writing, and formal contexts.
The right synonym doesn’t just say “quickly”—it shows exactly how and when something happens. Let’s explore the best alternatives to “immediately” and find the perfect expression for every situation.
At Once
Meaning: At once means doing something without waiting.
Examples:
- Please come here at once.
- She started the work at once.
Right Away
Meaning: Right away means doing something as soon as possible.
Examples:
- I will call you right away.
- Please send me the file right away.
Right Now
Meaning: Right now means happening or being done at this exact time.
Examples:
- I need your help right now.
- She is talking to him right now.
Straightaway
Meaning: Straightaway means doing something immediately.
Examples:
- He left straightaway after lunch.
- I will check the message straightaway.
Directly
Meaning: Directly can mean doing something without delay.
Examples:
- She went directly to the office.
- I will speak to him directly.
Promptly
Meaning: Promptly means doing something quickly and without delay.
Examples:
- The doctor answered promptly.
- Please reply to my email promptly.
Instantly
Meaning: Instantly means something happens at once.
Examples:
- The screen turned on instantly.
- She knew the answer instantly.
Quickly
Meaning: Quickly means doing something in a short time.
Examples:
- Please finish this quickly.
- He quickly opened the door.
At Present
Meaning: At present means something is happening now.
Examples:
- We are busy at present.
- The shop is closed at present.
This Instant
Meaning: This instant means right at this moment.
Examples:
- Come here this instant.
- I need an answer this instant.
Forthwith
Meaning: Forthwith means doing something immediately.
Examples:
- The order must be followed forthwith.
- He was told to leave forthwith.
Without Delay
Meaning: Without delay means doing something without waiting.
Examples:
- Please report the problem without delay.
- The team began work without delay.
Without Waiting
Meaning: Without waiting means doing something at once.
Examples:
- She left without waiting for us.
- He started eating without waiting.
On the Spot
Meaning: On the spot means doing something at that exact time or place.
Examples:
- The manager solved the issue on the spot.
- She paid the bill on the spot.
In No Time
Meaning: In no time means very quickly.
Examples:
- We will finish it in no time.
- He fixed the bike in no time.
Before Long
Meaning: Before long means soon or after only a short time.
Examples:
- The rain stopped before long.
- She found a new job before long.
As Soon as Possible
Meaning: As soon as possible means without unnecessary waiting.
Examples:
- Please reply as soon as possible.
- I will finish the task as soon as possible.
As Soon as
Meaning: As soon as means immediately after something happens.
Examples:
- Call me as soon as you arrive.
- I will eat as soon as I get home.
At the Earliest
Meaning: At the earliest means at the first possible time.
Examples:
- We can meet at the earliest tomorrow.
- Please send the report at the earliest.
At Short Notice
Meaning: At short notice means with very little time to prepare.
Examples:
- She accepted the job at short notice.
- We changed the plan at short notice.
Pronto
Meaning: Pronto means quickly or immediately.
Examples:
- Please finish this job pronto.
- The manager wants the report pronto.
Like a Shot
Meaning: Like a shot means moving or acting very quickly.
Examples:
- He ran outside like a shot.
- She left the room like a shot.
In a Flash
Meaning: In a flash means very quickly.
Examples:
- The car disappeared in a flash.
- He solved the puzzle in a flash.
In an Instant
Meaning: In an instant means in a very short time.
Examples:
- The lights went out in an instant.
- She made her choice in an instant.
In a Moment
Meaning: In a moment means very soon or after a very short time.
Examples:
- I will be there in a moment.
- The waiter will come in a moment.
In a Trice
Meaning: In a trice means very quickly.
Examples:
- He cleaned the room in a trice.
- She finished the meal in a trice.
Before You Know It
Meaning: Before you know it means something happens very quickly.
Examples:
- The weekend will be here before you know it.
- You will finish the book before you know it.
In Short Order
Meaning: In short order means very quickly.
Examples:
- The problem was fixed in short order.
- She completed the task in short order.
Speedily
Meaning: Speedily means doing something quickly.
Examples:
- The workers repaired the road speedily.
- Please handle the request speedily.
Rapidly
Meaning: Rapidly means happening very quickly.
Examples:
- The weather changed rapidly.
- The company grew rapidly.
Swiftly
Meaning: Swiftly means moving or acting very quickly.
Examples:
- The police acted swiftly.
- She swiftly closed the window.
Hastily
Meaning: Hastily means doing something very quickly, often with little care.
Examples:
- He hastily packed his bag.
- She hastily left the meeting.
Posthaste
Meaning: Posthaste means as quickly as possible.
Examples:
- The message was sent posthaste.
- He traveled home posthaste.
Expeditiously
Meaning: Expeditiously means doing something quickly and efficiently.
Examples:
- The request was handled expeditiously.
- Please process the form expeditiously.
Without Hesitation
Meaning: Without hesitation means acting without stopping to think or wait.
Examples:
- She helped him without hesitation.
- He accepted the offer without hesitation.
Without Pause
Meaning: Without pause means continuing without stopping.
Examples:
- The speaker talked without pause.
- She worked without pause for an hour.
Without Stopping
Meaning: Without stopping means continuing without taking a break.
Examples:
- He ran without stopping.
- They worked without stopping until sunset.
With No Delay
Meaning: With no delay means doing something immediately.
Examples:
- The nurse called the doctor with no delay.
- We sent the package with no delay.
With Immediate Effect
Meaning: With immediate effect means starting at once.
Examples:
- The new rule begins with immediate effect.
- His contract ended with immediate effect.
From This Moment
Meaning: From this moment means starting now.
Examples:
- From this moment, we work as a team.
- From this moment, the rule will apply.
From Now On
Meaning: From now on means starting at the present time.
Examples:
- From now on, I will wake up early.
- From now on, please check your work.
42. There and Then
Meaning: There and then means at that exact time and place.
Examples:
- She made the choice there and then.
- He paid the money there and then.
Then and There
Meaning: Then and there means at that exact time and place.
Examples:
- I decided then and there to leave.
- She accepted the offer then and there.
Forthwith and Without Delay
Meaning: This phrase means something should happen immediately.
Examples:
- The notice must be answered forthwith and without delay.
- The order was carried out forthwith and without delay.
At the Drop of a Hat
Meaning: At the drop of a hat means doing something without needing much warning.
Examples:
- She is ready to travel at the drop of a hat.
- He would help his friend at the drop of a hat.
At a Moment’s Notice
Meaning: At a moment’s notice means being ready to act very quickly.
Examples:
- The team can leave at a moment’s notice.
- She is ready to help at a moment’s notice.
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On the Double
Meaning: On the double means very quickly.
Examples:
- The officer told them to move on the double.
- Please bring the documents on the double.
In Double-Quick Time
Meaning: In double-quick time means extremely quickly.
Examples:
- They finished the work in double-quick time.
- She got ready in double-quick time.
At Lightning Speed
Meaning: At lightning speed means extremely fast.
Examples:
- The car moved at lightning speed.
- He typed the answer at lightning speed.
In the Blink of an Eye
Meaning: In the blink of an eye means something happens extremely quickly.
Examples:
- The bird flew away in the blink of an eye.
- The money was gone in the blink of an eye.
Conclusion
Learning synonyms for immediately can make your writing and speaking more interesting. Words like right away, promptly, instantly, swiftly, and without delay help you choose the right tone for each situation. Students can use them in essays, while bloggers and content writers can avoid repeating the same word. Daily English users can also use these alternatives in emails and conversations. Practice a few new words each day. Try using them in your emails, essays, messages, and daily conversations to build stronger English skills.
Alice Johnson is an English vocabulary writer and language enthusiast at GuestMediaHub.com. She creates clear and practical guides on synonyms, word meanings, grammar, and everyday English. Her goal is to make English easier to understand and help readers build a stronger vocabulary with confidence.
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