
irresponsible; perfunctory; careless
lukewarm; half-baked; halfhearted; vague
(already) enough
considerably; quite; rather; pretty
いい加減にしないと信用を失ってしまう。
If you don't stop being irresponsible, you'll lose trust.
いい加減な態度では成功できないだろう。
You probably can't succeed with a half-hearted attitude.
いつまでも文句ばかり言って、いい加減にしてよ。
Stop complaining all the time already!