ダウンdaun

1. noun, suru verb, transitive verb, intransitive verbfall; decrease; drop; going down
2. noun, suru verb, transitive verb, intransitive verb, boxingknocking down; flooring; being knocked down; being floored
3. noun, suru verb, intransitive verbbeing out of action (due to illness, exhaustion, etc.); being down (e.g. with a cold); being knocked out (from alcohol); being out of it; collapsing
   彼女かのじょは風邪かぜでダウンした。↗

   She came down with a cold.
4. noun, suru verb, intransitive verb, computinggoing down (of a computer system, server, etc.); crashing
   サーバーがダウンしてて、メールチェックできない。↗

   I can't check my mail. The server is down.
5. noun, baseball(number of) outs
6. noun, sportsbeing down (in points, games, etc.); being behind; trailing
7. noun, sportsdown (in American football)
8. noundown (feathers)
9. noundown jacket

• Synonym下落げらくNeutralA noun for falls in price or value, as in 「株価の下落」; mostly economic contexts. 「ダウン」 is colloquial and also covers being knocked down or laid low.
• Synonym下降かこうNeutralA noun for a drop in position or degree, as in 「気温が下降する」; leans written/formal and lacks the knockdown and laid-low senses of 「ダウン」.
• SynonymさがるNeutralA native Japanese verb for going down in general, as in 「熱が下がる」; very common in everyday speech for plain decreases.
• Synonym下るくだるNeutralTakes the step-back sense of 「下がる」, as in 「一歩下がる」 or 「後ろに下がる」; 「ダウン」 is not used for moving back.
• Synonym落ちるおちるNeutralFor things dropping or falling, and often for sales or quality declining, as in 「売上が落ちる」, overlapping the decrease sense of 「ダウン」; also failing an exam.
• Related落ち込むおちこむNeutralFor feeling low or business and economic slumps, as in 「失恋で落ち込む」; stresses sinking into a depressed or sluggish state rather than a simple drop.
• Related落つおつWrittenAn archaic verb meaning to fall; rarely used today, surviving mainly in written phrases such as 「地に落つ」.
• Antonym上昇じょうしょうNeutralThe antonym: rising or climbing in position or degree, the direct opposite of 「ダウン」.

Use 「ダウン」 for numerical drops, being knocked down, or being laid low, as in 「風邪でダウンする」 or 「コストダウン」. For falling prices say 「下落」, for general decreases 「下がる」, for feeling low 「落ち込む」; the opposite is 「上昇」.

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

1. さがること。さげること。
2. 足あしの裏うら以外いがいの体からだの一部いちぶが床ゆかに付つくこと。グロッキーになること。
3. アウトになること。
4. 疲労ひろうなどで体からだや機器ききが動うごかなくなること。
5. 羽毛うもう。また、羽毛うもうの下部かぶの柔やわらかい部分ぶぶん。