Apropos is not a very common word in English. But it's not rare either.

Short and sweet meaning of apropos is appropriate.

You can learn this by saying

"How apropos!" when you mean to say "How appropriate!" (when you agree with someone on something)

Apropos is not a very common word in English. But it's not rare either.

Short and sweet meaning of apropos is appropriate.

You can learn this by saying

"How apropos!" when you mean to say "How appropriate!" (when you agree with someone on something)