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The word:
Ii kagen いい加減 【いいかげん】 (adj-na,adv,exp,n) moderate, right, random, not thorough, vague, irresponsible, halfhearted, (P)
You often hear people saying things like "Ii kagen shiro" which is a command that usually translates to "cut it out". It literally means "moderate yourself" or "that's enough of that"