没落|ぼつらくbotsuraku[0]heiban (flat)

1. noun, suru verb, intransitive verbruin; fall; collapse; downfall; bankruptcy
   商売しょうばいでそんな失敗しっぱいをしたらどんな会社かいしゃでも没落ぼつらくする。↗

   Such a business failure would sink any company.

• Synonym凋落ちょうらくWrittenWritten word: flowers and trees withering, figuratively a power in decline, wistful in tone; 「没落」 stresses the fall from prosperity and loss of status, even to ruin.
• Synonym零落れいらくWrittenWritten word for a family falling on hard times, sinking into poverty; 「没落」 centres on the loss of status itself.
• Related衰退すいたいNeutralNeutral, all-purpose word for decline, as in 「景気衰退」; 「没落」 is said mainly of families, nations and forces going to ruin.
• Related崩れくずれNeutralNeutral word for crumbling collapse, or a person past their prime (a has-been); 「没落」 stresses loss of status.
• Related破滅はめつNeutralNeutral word for utter destruction and disgrace; 「没落」 is milder in degree.
• Related退廃たいはいWrittenWritten word for moral decadence and corruption, a decay of values; 「没落」 centres on a loss of status.
• Related敗残はいざんWrittenWritten word for surviving in the aftermath of defeat; 「没落」 is about a family's decline in standing.
• Related退勢たいせいWrittenWritten word for the momentum of decline; 「没落」 stresses the loss of status.
• Related廃退はいたいWrittenWritten word for moral and social decadence; 「没落」 is about the standing of a family or house.
• Related萎靡いびWrittenRare written word for languid, fading decline; 「没落」 is the more common choice.
• Related衰勢すいせいWrittenWritten word for the downward trend of one's fortunes; 「没落」 denotes the state of having fallen from prosperity.
• Related衰微すいびWrittenWritten word for the waning of something once flourishing; 「没落」 stresses loss of status.
• Related凋残ちょうざんWrittenRare written word for flowers and plants withering; for a declining power, 「没落」 or 「衰退」 is the usual choice.
• Related落魄らくはくWrittenWritten word for being down and out, reduced to poverty; 「没落」 centres on loss of status.
• Related廃残はいざんWrittenRare written word for broken-down decline; say 「没落」 instead in most cases.
• Related廃滅はいめつWrittenRare written word for decay ending in ruin; 「没落」 or 「破滅」 is normally used.
• Related覆滅ふくめつWrittenWritten word for complete overthrow and destruction; 「没落」 is milder in degree.
• Antonym繁栄はんえいNeutralNeutral antonym: prosperity and thriving, the direct opposite of the decline expressed by 「没落」.
• Antonym隆盛りゅうせいWrittenWritten antonym: flourishing and thriving at full strength, the opposite of 「没落」.
• Antonym興隆こうりゅうWrittenWritten antonym: rising and prospering, the opposite of the decline expressed by 「没落」.

Use 「没落」 for a family, nation or force falling from prosperity and losing its standing, as in 「没落貴族」. For decline in general say 「衰退」; for withering, 「凋落」; for a family fallen on hard times, 「零落」; for utter destruction, 「破滅」; for the opposite, 「繁栄」. The other written words are rarer or narrower — momentum of decline (「退勢」「衰勢」), moral decadence (「退廃」「廃退」), survival after defeat (「敗残」) — and rare ones like 「萎靡」「廃残」「廃滅」 usually give way to 「没落」.

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

1. 落おちぶれること。衰おとろえること。
2. 敗戦はいせんによって勢いきおいを失うしない、滅亡めつぼうすること。