1.
irresponsible, sloppy, half-hearted
Describes careless, unreliable behavior or work done without proper attention.
いい加減な仕事だ。
That's sloppy work.
あいつはいい加減な奴だ。
That guy is so irresponsible.
いい加減なことを言うな。
Don't say things you don't mean.
2.
enough already, cut it out
Used to express frustration and demand that someone stop what they're doing.
いい加減にしろ！
Knock it off! / That's enough!
いい加減にしてよ！
Give me a break! / Cut it out!
冗談もいい加減にしてくれ。
Enough with the jokes already.
いい加減に起きなさい。
Get up already.
3.
moderately, appropriately
Describes doing something to a reasonable degree, not too much or too little.
いい加減にしておく。
I'll do it in moderation.
お酒はいい加減に飲もう。
Let's drink in moderation.
いい加減 has contrasting meanings depending on context:
**Negative sense (most common in casual speech):**
- いい加減な + noun = sloppy, irresponsible
- いい加減にしろ/して = stop it, that's enough (expression of frustration)
**Positive/neutral sense:**
- いい加減に = moderately, appropriately
The phrase いい加減にしろ！is a strong expression of annoyance, often used when someone's behavior has become intolerable.