1.
to feel down, to be depressed
To become sad, dejected, or emotionally low.
試験に落ちて落ち込んでいる。
I'm feeling down because I failed the exam.
そんなに落ち込まないで。
Don't be so down.
失恋して落ち込んでいる。
I'm depressed after being rejected.
何があったの？落ち込んでるね。
What happened? You seem down.
失敗して落ち込む必要はない。
There's no need to feel down about failing.
彼女はまだ落ち込んでいる。
She's still feeling down.
2.
to fall into, to sink into
To drop or sink into something.
ボールが穴に落ち込んだ。
The ball fell into the hole.
車が溝に落ち込んだ。
The car sank into a ditch.
地盤が落ち込んでいる。
The ground is subsiding.
3.
to decline, to slump
For business, economy, etc. to decline.
売り上げが落ち込んでいる。
Sales are declining.
景気が落ち込んでいる。
The economy is in a slump.
株価が大きく落ち込んだ。
Stock prices dropped significantly.
成績が落ち込んでいる。
My grades are declining.
視聴率が落ち込んだ。
Viewership ratings dropped.
需要が落ち込んでいる。
Demand is declining.
落ち込む is a compound godan verb formed from 落ちる (to fall) + 込む (into).
TRANSITIVITY:
- Type: 自動詞 (intransitive)
- No transitive pair
ASPECT (ている):
落ち込んでいる describes an ongoing state of being depressed or a continuing decline.
COMMON PATTERNS:
- 試験に落ちて落ち込む: to feel down after failing an exam
- 売り上げが落ち込む: sales decline
- ひどく落ち込む: to be deeply depressed
USAGE:
Most commonly used for emotional state (sense 1) in daily conversation. For physical falling, 落ちる alone is more common.