1.
to weaken, to grow weak
To lose strength.
体が弱っている。
My body is weakening.
電池が弱ってきた。
The battery is getting weak.
病気で体が弱ってしまった。
My body weakened due to illness.
2.
to be troubled, to be at a loss
To not know what to do.
弱ったなあ。
What a problem.
Used as an exclamation meaning "I'm in trouble" or "What a predicament"
急に雨が降ってきて弱った。
It suddenly started raining and I was in trouble.
何を言われても答えられなくて弱った。
No matter what I was asked, I couldn't answer and was at a loss.
弱る means to weaken or to be troubled/at a loss.
TRANSITIVITY:
- Type: 自動詞 (intransitive)
- Related transitive: 弱める (to weaken something)
TWO MAIN MEANINGS:
1. Physical weakening: 体が弱る (body weakens)
2. Being troubled: 困って弱る (be troubled and at a loss)
COMMON PATTERNS:
- 弱っている: is weakened/troubled
- 弱った！: I'm in trouble! (interjection)
- 弱り切る: to be completely exhausted/at one's wits' end
RELATED:
- 弱い: weak (adjective)
- 弱める: to weaken (transitive)
- 弱まる: to become weak (intransitive)
NOTE:
弱った used as an exclamation expresses being troubled or at a loss, similar to "I'm stuck" or "What a problem!"