If something is fake, it means that it looks like something, but it isn’t real.
- He’s wearing a fake moustache.
We can also use the word fake when someone isn’t showing who they really are, or what they really think.
- I hate her fake laugh.
If you fake something, it means that you make something that isn’t real.
- She faked that letter from her parents.
A fake is something that looks like something real, but it isn’t real.
- That painting isn’t a Picasso. It’s a fake.