
how emotionally MATURE you are,
didn't you?
The Big Bang Theory Season 11, Episode 15

Yes, and I think it's pretty
MATURE of me to admit it.
The Big Bang Theory Season 11, Episode 11

Adults in a MATURE relationship.
The Big Bang Theory Season 8, Episode 6

That's very MATURE of you.
The Big Bang Theory Season 9, Episode 13

That would be
the MATURE thing to do.
The Big Bang Theory Season 11, Episode 15