やめておく

godan verb (-ku)

pass on; give a miss; skip

Used when deciding not to do something, often because it's not necessary or to avoid trouble. Implies a deliberate choice to refrain.

• 今日きょうは飲のみ会かいをやめておくよ。

  I'll pass on the drinking party today.

• 雨あめが降ふりそうだから、出でかけるのはやめておこう。

  It looks like rain, so let's skip going out.

godan verb (-ku)

cut it out; knock off; let it drop

Used when stopping an ongoing action or behavior, often abruptly or as a suggestion to quit. Can imply 'that's enough' or 'stop doing that'.

• もう遅おそいから、今日きょうの仕し事ごとはやめておきなよ。

  It's late, so why don't you knock off work for today?

• その話はなしはやめておこう。

  Let's drop that subject.