Repeat vs Say again

When to use each in English, with meaning, register, and examples.

Repeat

Top 1,000 (very common)A1verb

Say again

Top 2,000 (common)
Most common: Repeat
 RepeatSay again
Pronunciation🇬🇧 /["/rɪˈpiːt/","/rɪˈpiːts/","/rɪˈpiːtɪd/","/rɪˈpiːtɪŋ/"]/🇺🇸 /["/rɪˈpiːt/","/rɪˈpiːts/","/rɪˈpiːtɪd/","/rɪˈpiːtɪŋ/"]/🇬🇧 //seɪ əˈɡɛn//🇺🇸 //seɪ əˈɡɛn//
MeaningTo say or do something again.To repeat something that was just said.
ExamplePlease repeat the instructions so everyone understands.I didn't catch that, could you please say again?
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelA1-
Part of speechverb
Collocationsjust, merely, simply, can only, be necessary to, need to, after, to, keep repeating somebody/​something, just, merely, simply, can only, be necessary to, need to, after, to, keep repeating somebody/​something, just, merely, simply, can only, be necessary to, need to, after, to, keep repeating somebody/​something, just, merely, simply, can only, be necessary to, need to, after, to, keep repeating somebody/​something, just, merely, simply, can only, be necessary to, need to, after, to, keep repeating somebody/​somethingask to say again, hard to say again, quickly say again
Antonymsstop, ignore, forget-
Common mistakesConfused with 'replay' (for videos), Using 'repeated' instead of 'repeat' when requesting action, Misplacing the object, e.g., 'repeat me' instead of 'repeat this'Using 'say again' in overly formal situations; better to use 'Could you repeat that?', Confusing 'say again' with 'say it again'; 'say again' is more concise.
Usage notesUse 'repeat' when asking someone to say something again. It's generally neutral and appropriate in most contexts, but avoid using in very formal writing.Use 'say again' in conversations when you want clarification. It's polite and neutral, appropriate in both casual and formal contexts.

See it in real clips

Repeat
Say again

Frequently asked questions: Repeat vs Say again

What's the difference between Repeat and Say again?

Repeat: To say or do something again. Say again: To repeat something that was just said.

Which is more common: Repeat and Say again?

Repeat is the most common in everyday English.

Can you show an example of each?

Repeat: Please repeat the instructions so everyone understands. Say again: I didn't catch that, could you please say again?

Can I use Repeat and Say again interchangeably?

Not always. Repeat and Say again are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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