Quick answer: Delay suggests something has been made later, often unintentionally or temporarily, and may not specify a new time. Postpone is usually a deliberate decision to reschedule to a definite future time: The match was postponed until Saturday. For a fuller definition, see the Cambridge Dictionary entry for ‘delay’.
Comparison Table
| Word | Intention | New time? | Example |
|---|---|---|---|
| delay | unintentional or temporary | not always given | The flight was delayed by fog. |
| postpone | deliberate decision | usually specified | The meeting was postponed to Friday. |
Understanding Delay
Delay covers any situation where something happens later than planned. It can result from external causes (weather, traffic, technical issues) or from a deliberate choice. A delay may be short or long, and the new time is often not specified. Delay can also be used without an object: “Don’t delay!”
The train was delayed by 20 minutes.
Bad weather delayed the launch.
Stop delaying and make a decision.
Her reply was delayed due to illness.
Delay as a Noun
Delay also works as a noun: “There was a two-hour delay at the airport.” Postpone does not have a direct noun form; use postponement instead.
Understanding Postpone
Postpone is always a deliberate act. Someone makes a conscious decision to move an event to a later, usually specified, date or time. It is more formal than delay and is common in official announcements and business communication.
The conference has been postponed to September.
They decided to postpone the vote.
The surgery was postponed until a donor was found.
We regret that the event must be postponed.
Common Mistakes
✗ The flight was postponed by bad weather. (weather causes delays, not deliberate postponements)
✓ The flight was delayed by bad weather.
✗ The match has been postponed. (acceptable but unusual — postpone usually implies a new date is known)
✓ The match has been postponed to next Sunday.
✗ There was a postpone of one week.
✓ There was a postponement of one week. / There was a one-week delay.
Also compare: End vs Stop, Demand vs Require, Control vs Manage. Browse all confusing word pairs →
Quick Check: Delay or Postpone?
Four questions — choose the correct word.
1. “The surgery was ___ to the following Monday.” (deliberate decision)
2. “Heavy traffic ___ my arrival by an hour.”
3. “We decided to ___ the product launch until Q4.”
4. “There was a two-hour ___ at the airport.” (noun)
Frequently Asked Questions
What is the difference between delay and postpone?
Delay suggests something was made later, often unintentionally or without a new time being set. Postpone is a deliberate decision to move an event to a specific future date or time.
Can delay be used without an object?
Yes. “Don’t delay!” or “Why are you delaying?” use delay intransitively to mean to be slow or put things off. Postpone always needs an object (the event being moved).
What is the noun form of postpone?
The noun is postponement: “The postponement was announced yesterday.” Delay is both a verb and a noun: “There was a two-hour delay.”
Is postpone more formal than delay?
Yes, generally. Postpone is more formal and is common in official announcements, business emails, and event notices. Delay is used in both formal and informal contexts.
Can I say “the game was postponed because of rain”?
Yes, this is natural. Although rain is an external cause, the decision to move the match is deliberate. When officials make a formal rescheduling decision, postpone is correct even if an external event triggered it.
Does postpone always require a new date?
Not always, but a new date is strongly implied. “The meeting has been postponed” suggests a new date will follow. If no date will ever be set, use cancel or call off instead.
What is the difference between delay and cancel?
Delay means later; cancel means not happening at all. “The flight was delayed” means it will still depart, just later. “The flight was cancelled” means it will not depart at all.
Can I use postpone in informal speech?
Postpone can be used informally, but it can sound a little stiff in casual conversation. Native speakers often use “push back” or “put off” instead: “Can we put the meeting off until Thursday?”
What is the past tense of postpone?
Regular: postponed. “The event was postponed.” The past tense of delay is also regular: delayed. “The train was delayed.”
Which should I use in a formal business email?
For rescheduling an event to a known future date, postpone is the better formal choice: “We regret to inform you that the meeting has been postponed to 15 July.” For an unspecified later time, delay or defer may be more appropriate.