Dismiss vs Forget about me

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

Dismiss

Top 2,000 (common)B2verb

Forget about me

InformalTop 5,000 (fairly common)
Most formal: DismissMost common: Dismiss
 DismissForget about me
Pronunciation🇬🇧 /["/dɪsˈmɪs/","/dɪsˈmɪsɪz/","/dɪsˈmɪst/","/dɪsˈmɪsɪŋ/"]/🇺🇸 /["/dɪsˈmɪs/","/dɪsˈmɪsɪz/","/dɪsˈmɪst/","/dɪsˈmɪsɪŋ/"]/🇬🇧 //fəˈɡɛt əˈbaʊt miː//🇺🇸 //fərˈɡɛt əˈbaʊt mi//
MeaningTo let someone or something go or not consider it.Don't think about me anymore.
ExampleThe teacher decided to dismiss the class early today.You can just forget about me if I'm causing trouble.
RegisterNeutralInformal
How commonTop 2,000 (common)Top 5,000 (fairly common)
CEFR levelB2-
Part of speechverb
Collocationsquickly, immediately, out of hand, be unable to, cannot, not be possible to, as, from, fairly, unfairly, wrongfully, fromforget about someone's feelings, forget about the past, forget about the details
Antonymsembrace, welcome, accept-
Common mistakesUsing 'dismiss' without an object (e.g., saying 'I dismiss' instead of 'I dismiss the idea'), Confusing with 'miss' (to fail to notice or understand), Overusing in casual speech where 'ignore' may be more appropriateUsing 'forget' without 'about'., Confusing with 'remember me'., Incorrectly using in a formal setting.
Usage notesUse 'dismiss' when you want to indicate that something is not worth consideration. It's neutral and should be avoided in very formal writing.Used informally to express the desire to be let go or not considered. Avoid in formal contexts.

See it in real clips

Dismiss
Forget about me

Frequently asked questions: Dismiss vs Forget about me

What's the difference between Dismiss and Forget about me?

Dismiss: To let someone or something go or not consider it. Forget about me: Don't think about me anymore.

Which is more formal: Dismiss and Forget about me?

Dismiss is the most formal of these.

Which is more common: Dismiss and Forget about me?

Dismiss is the most common in everyday English.

Can you show an example of each?

Dismiss: The teacher decided to dismiss the class early today. Forget about me: You can just forget about me if I'm causing trouble.

Can I use Dismiss and Forget about me interchangeably?

Not always. Dismiss and Forget about me 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.