topic marker “as for…” (casual は) · How people really talk
これは何?→これって何?
In casual speech, って often replaces the topic particle は, especially in questions: これは何? becomes これって何? It comes from というのは (“the thing called…”), so it sounds a bit like “this thing here, is it…?”
Use it withFriends OKCoworkers OKBoss / teacher careful
Very common when you bring something up to ask or comment on it. Works with polite endings too (これってどういうことですか).
207 lines with 〜って from 106 comedians in the library · Counts updated 2026-10-08
〜って means topic marker “as for…” (casual は). In casual speech, って often replaces the topic particle は, especially in questions: これは何? becomes これって何? It comes from というのは (“the thing called…”), so it sounds a bit like “this thing here, is it…?”
Is 〜って rude? Who can you say it to?
With friends: OK. With coworkers: OK. With a boss or teacher: careful. Very common when you bring something up to ask or comment on it. Works with polite endings too (これってどういうことですか).
How common is 〜って in real speech?
In 2,334 live comedy routines, 〜って appears in 207 lines from 106 comedians.