Apologize vs I am sorry

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

Apologize

Top 1,000 (very common)B1verb

I am sorry

Top 1,000 (very common)
 ApologizeI am sorry
Pronunciation🇬🇧 /["/əˈpɒlədʒaɪz/","/əˈpɒlədʒaɪzɪz/","/əˈpɒlədʒaɪzd/","/əˈpɒlədʒaɪzɪŋ/"]/🇺🇸 /["/əˈpɑːlədʒaɪz/","/əˈpɑːlədʒaɪzɪz/","/əˈpɑːlədʒaɪzd/","/əˈpɑːlədʒaɪzɪŋ/"]/🇬🇧 //aɪ æm ˈsɒri//🇺🇸 //aɪ æm ˈsɔri//
MeaningTo say sorry for something you did wrong.I feel bad about what I did.
ExampleI had to apologize to her for breaking her favorite vase.I'm sorry for being late to the meeting.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelB1-
Part of speechverb
Collocationssincerely, profusely, humbly, ought to, should, want to, for, to, I do apologize, I must apologizesay I'm sorry, feel sorry, sorry for
Antonymsignore, offend, upset-
Common mistakesConfusing 'apologize' with 'apology' (the noun form)., Using 'apologize' without specifying whom you are apologizing to., Mistakenly using past tense 'apologized' when 'apologize' is correct in present tense.Using 'I'm sorry' in overly casual settings when 'my bad' might be better., Confusing 'I'm sorry' with 'excuse me' in interruption contexts., Not pairing it with an explanation or solution in formal situations.
Usage notesUse 'apologize' in situations where you need to express regret for your actions. It's appropriate in both formal and informal contexts, but be cautious using it in very casual situations where slang may be preferred.Use when you want to express regret. It's suitable in most situations but may be too formal for very casual contexts.

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Apologize
I am sorry

Frequently asked questions: Apologize vs I am sorry

What's the difference between Apologize and I am sorry?

Apologize: To say sorry for something you did wrong. I am sorry: I feel bad about what I did.

Can you show an example of each?

Apologize: I had to apologize to her for breaking her favorite vase. I am sorry: I'm sorry for being late to the meeting.

Can I use Apologize and I am sorry interchangeably?

Not always. Apologize and I am sorry 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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