禁物

きんもつ

thing that should be (carefully) avoided; no-no; thing to definitely not do; something forbidden; taboo

noun

N1 freq #23

Example sentences

甘（あま）えは禁物（きんもつ）だよ。

You shouldn't expect things to be easy.

彼女（かのじょ）に太（ふと）ったねなんて言（い）うのは禁物（きんもつ）だ。

Don't mention that she's put on weight.