Dismiss vs Just ignore that

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

Dismiss

Top 2,000 (common)B2verb

Just ignore that

InformalTop 1,000 (very common)
Most formal: DismissMost common: Just ignore that
 DismissJust ignore that
Pronunciation🇬🇧 /["/dɪsˈmɪs/","/dɪsˈmɪsɪz/","/dɪsˈmɪst/","/dɪsˈmɪsɪŋ/"]/🇺🇸 /["/dɪsˈmɪs/","/dɪsˈmɪsɪz/","/dɪsˈmɪst/","/dɪsˈmɪsɪŋ/"]/🇬🇧 //dʒʌst ɪɡˈnɔː ðæt//🇺🇸 //dʒʌst ɪɡˈnɔr ðæt//
MeaningTo let someone or something go or not consider it.Don't pay attention to that.
ExampleThe teacher decided to dismiss the class early today.When she criticizes your work, just ignore that.
RegisterNeutralInformal
How commonTop 2,000 (common)Top 1,000 (very common)
CEFR levelB2-
Part of speechverb
Collocationsquickly, immediately, out of hand, be unable to, cannot, not be possible to, as, from, fairly, unfairly, wrongfully, fromjust ignore that comment, just ignore that noise, just ignore that person
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 appropriateConfusing with 'just' as a limiting word., Incorrectly emphasizing 'ignore' as a command instead of a suggestion.
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 in casual conversations; avoid in formal contexts. Suitable when suggesting someone not mind something.

See it in real clips

Just ignore that

Frequently asked questions: Dismiss vs Just ignore that

What's the difference between Dismiss and Just ignore that?

Dismiss: To let someone or something go or not consider it. Just ignore that: Don't pay attention to that.

Which is more formal: Dismiss and Just ignore that?

Dismiss is the most formal of these.

Which is more common: Dismiss and Just ignore that?

Just ignore that is the most common in everyday English.

Can you show an example of each?

Dismiss: The teacher decided to dismiss the class early today. Just ignore that: When she criticizes your work, just ignore that.

Can I use Dismiss and Just ignore that interchangeably?

Not always. Dismiss and Just ignore that 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.