Hilarious vs That's very funny

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

Hilarious

Top 2,000 (common)B2adjective

That's very funny

InformalTop 2,000 (common)
Most formal: Hilarious
 HilariousThat's very funny
Pronunciation🇬🇧 /["/hɪˈleəriəs/"]/🇺🇸 /["/hɪˈleriəs/"]/🇬🇧 //ðæts ˈvɛri ˈfʌni//🇺🇸 //ðæts ˈvɛri ˈfʌni//
MeaningVery funny; something that makes you laugh a lot.It makes me laugh a lot.
Examplea hilarious joke/storyHis joke was so clever; that's very funny!
RegisterNeutralInformal
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelB2-
Part of speechadjective
Collocationshilarious joke, hilarious situation, hilarious movie, hilarious commentthat's very funny indeed, that's very funny you mention it, that's very funny, isn't it
Antonymsserious, boring, unfunny-
Common mistakesUsing 'hilarious' for something only mildly funny., Confusing 'hilarious' with 'humorous', which is less intense., Using it in a negative context incorrectly.Mixing with 'That's so funny' which is less intense., Using in serious discussions where humor is inappropriate., Incorrectly using it when something is not funny at all.
Usage notesUse 'hilarious' to describe jokes, movies, or situations that are very funny. It fits well in both casual and formal contexts but might feel too strong for mild humor.Use when something is humorous or amusing. Common in casual conversations among friends. Avoid in formal contexts.

See it in real clips

Hilarious
That's very funny

Frequently asked questions: Hilarious vs That's very funny

What's the difference between Hilarious and That's very funny?

Hilarious: Very funny; something that makes you laugh a lot. That's very funny: It makes me laugh a lot.

Which is more formal: Hilarious and That's very funny?

Hilarious is the most formal of these.

Can you show an example of each?

Hilarious: a hilarious joke/story That's very funny: His joke was so clever; that's very funny!

Can I use Hilarious and That's very funny interchangeably?

Not always. Hilarious and That's very funny 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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