Looking on the internet deeply has found these results:

really catching on is the most popular phrase on the web.

definitly catching on 19,320 results on the web	really catching on 161,200 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
You know, I think he's finally catching on. I'm glad you're catching on. I think you're probably catching on by now. I really didn't think you were catching on. The band... is catching on. Looks like these guys are finally catching on. Get something eye catching on your blog.	Emma's really good at catching people. Emma's really good at catching people. I kept catching those really long rights. 'Cause, you know, I always thought so, but it seems like other people aren't really catching' on. But I really thought I was catching a vibe. Sharks have a really tough time catching seals and sea lions. You should be really proud of yourself catching a moth that's already caught. Man, that game is really catching on.

definitly catching on

19,320 results on the web

really catching on

161,200 results on the web

More popular!

Emma's really good at catching people.
Emma's really good at catching people.
I kept catching those really long rights.
'Cause, you know, I always thought so, but it seems like other people aren't really catching' on.
But I really thought I was catching a vibe.
Sharks have a really tough time catching seals and sea lions.
You should be really proud of yourself catching a moth that's already caught.
Man, that game is really catching on.