落ち込む|おちこむochikomu[3]nakadaka (mid-high)

1. godan verb, intransitive verbto feel down; to feel sad; to be depressed; to be in low spirits
   ちょっとしたことで直すぐに落ち込おちこんでしまいます。↗

   I get depressed by the slightest things.
2. godan verb, intransitive verbto be in a slump (business, economy, etc.); to be in an unfavourable condition
   １年ねん前まえに比くらべれば価格かかくは大おおきく落ち込おちこんでいる。↗

   Compared with the level of a year ago, the price is sharply lower.
3. godan verb, intransitive verbto fall into (e.g. a hole)

• Related落ちるおちるNeutralFor falling or dropping, as in 「階段から落ちる」 or 「成績が落ちる」; it is about the act of falling, while 「落ち込む」 is about low spirits or a slump.
• Related下落げらくWrittenWritten/formal prose for falling prices or markets, as in 「株価の下落」; concerns market conditions, not moods.
• Related低下ていかWrittenWritten/formal prose for a drop in ability or quality, as in 「体力の低下」; about levels falling, not spirits sinking.
• Related低落ていらくWrittenWritten/formal prose for markets or morale hitting a low; leans toward slump-like depression of conditions.
• Related減少げんしょうNeutralFor a decrease in number or amount; statistical in flavour and carries no sense of low spirits.
• Related減退げんたいWrittenWritten/formal prose for decline or weakening, as in 「食欲減退」; typically of physical functions or appetites.
• RelatedダウンNeutralLoanword for a drop or for being laid low, as in 「風邪でダウン」; common in colloquial speech.
• Related陥るおちいるNeutralFor falling into a bad state — a trap, panic, illness — as in 「パニックに陥る」; centres on being stuck in trouble.
• Related減るへるNeutralFor quantities shrinking, as in 「体重が減る」; purely about amount, with no sense of feeling down.
• Related下向くしたむくNeutralFor pointing downward or conditions turning lower, as in 「景気が下向く」; stresses the downward trend.
• Related凋落ちょうらくWrittenWritten/formal prose for decline and withering, as in 「名門の凋落」; suggests decay after a peak.
• Related落つおつWrittenArchaic verb for falling; seen mainly in classical texts and literary works.
• Related落っこちるおっこちるCasualColloquial for dropping down or failing, as in 「試験に落っこちる」.
• Antonym上がるあがるNeutralAntonym: to rise or go up, the opposite of the downward slide or low spirits of 「落ち込む」.

Use 「落ち込む」 for low spirits, a slump in business or the economy, or falling into a hole, as in 「失恋で落ち込む」 and 「売上が落ち込む」. For ordinary falling say 「落ちる」, for falling into a bad state 「陥る」; the opposite is 「上がる」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 落おちて入り込はいりこむ。
2. 悪わるい状態じょうたいや状況じょうきょうになる。
3. 深ふかくへこんでくぼむ。陥没かんぼつする。
4. 気分きぶんがふさぐ。