to break down; to stop working; to become ruined or worn out
この時計、いかれちゃってもう動かないよ。
This watch is shot — it doesn't work anymore.
長年使ったプリンターがいかれて、印刷できなくなった。
The printer I've used for years broke down and can't print.
このパソコンは熱でいかれてしまったらしい。
It seems this computer got damaged from overheating.
to be crazy; to be nuts; (colloquial) to have lost one's mind
そんなことを平気で言うなんて、イカれてるとしか思えない。
Saying something like that calmly — I can only think they're crazy.
あの男、最近ちょっとイカれてきたようだ。
That guy seems to have gone a bit crazy lately.
冗談でもそんなことをしろって言うのはイカれるよ。
Even as a joke, telling someone to do that is insane.
to be infatuated with; to be crazy about someone; to be head over heels
彼は彼女にいかれて、常に連絡を取りたがる。
He's crazy about her and always wants to get in touch.
あの先輩にいかれてる後輩は何を言っても聞かない。
The junior who's smitten with that senior won't listen to anything.
若いころは一人の人にいかれてしまうこともある。
When you're young, you can sometimes become head over heels for one person.
to be outdone or beaten by someone; to be left behind (in competition)
新しい社員にいかれて、プロジェクトの先頭を奪われた。
We were outdone by a new employee and lost the lead in the project.
ベテランランナーにいかれてしまい、順位を下げた。
I was overtaken by a veteran runner and fell in the rankings.
彼のアイデアにいかれて、私たちの案は採用されなかった。
His idea outshone ours, so our proposal wasn't adopted.