禁物きんもつ (kinmotsu)

無理むりは禁物きんもつです

You must not overdo it.

甘あまえは禁物きんもつです。

You shouldn't expect things to be easy.

油断は禁物だよ.

You've got to be on your guard [toes].

公事に情実は禁物だ.

Private [Personal] considerations must not enter into public affairs.

勝負には感傷は禁物だ.

There's no place for sentiment in competition.

長ながい付き合つきあいにかけは禁物きんもつ。

Short accounts make long friends.

長ながくつき合あうには掛かけは禁物きんもつ。

Short accounts make long friends.

旅行りょこうに荷物にもつが多おおすぎるのは禁物きんもつ。

Don't carry too much baggage when you travel.

《諺》長くつき合うには掛けは禁物.

Short accounts make long friends.

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.