やめときなよ

you’d better not

→ やめる

phrase Rare #38,633

you’d better not An informal way to advise someone not to do something. It is a contraction of やめておきなよ and can also mean “stop it” or “give it a rest,” depending on context.

JA: そんな危ないこと、やめときなよ。

EN: You’d better not do something that dangerous.

こんなひどい天気の時に出かけるのはやめときなよ。

You should probably stay home in weather this awful.

（男）やめときなよばあちゃん

(Man) Don't do it, Grandma.

— ハウルの動く城 (2004)

（川井）やめときなよ

(Kawai) You should forget it.

— 映画聲の形 (2016)

こんなひどい天気の中、出かけるのやめときなよ。

You should skip going out in weather this terrible.