下落|げらくgeraku[0]heiban (flat)

1. noun, suru verb, intransitive verbdepreciation; decline; fall; slump
   株式市場かぶしきしじょうは今日きょう、下落げらくした。↗

   The stock market has dropped today.

• Synonym低下ていかNeutralRefers to ability, quality, or level getting worse, as in 「体力低下」; 「下落」 is about price, value, or rank falling.
• Synonym下降かこうNeutralCovers drops in position or figures — temperature, aircraft altitude — a broad word; 「下落」 mostly describes price, value, or rank.
• Synonym低落ていらくWrittenWritten style, for falls in value, price, popularity, or reputation; close to 「下落」 in meaning but less common.
• SynonymダウンCasualLoanword; colloquially a drop or decrease, also being knocked down or laid up sick; 「下落」 is the formal word for a market fall.
• SynonymさがるNeutralEveryday native verb for anything going down — prices, temperature, grades; 「下落」 is a Sino-Japanese noun.
• Synonym減るへるNeutralEveryday native verb for quantity or amount decreasing; 「下落」 is about price or value falling.
• SynonymさがりNeutralNoun for a fall, mostly seen in compounds like 「値下がり」; also has other senses (sumo cords), rarely used alone.
• Synonym減りへりNeutralNoun for the amount of decrease, as in 「減りが早い」, mostly about consumption; 「下落」 is about price or value.
• Related落ち込むおちこむNeutralVerb for feeling low or for business and the economy slumping, also falling into a hole; 「下落」 is not used for moods.
• Related減少げんしょうNeutralA decrease in quantity, as in 「人口減少」; 「下落」 is about price, value, or rank going down.
• Related減退げんたいWrittenWritten style, for weakening of appetite, strength, motivation and the like; 「下落」 describes falls in price or value.
• Related衰退すいたいWrittenFor national power, industry, or influence declining, as in 「産業の衰退」; 「下落」 is about price or value dropping.
• Related下り坂くだりざかNeutralLiterally a downhill slope, used figuratively for fortunes, the economy, or weather going downhill; 「下落」 is a concrete fall.
• Related退潮たいちょうWrittenWritten style; literally an ebb tide, by extension the waning of influence; 「下落」 is about price, value, or rank falling.
• Related後退こうたいNeutralMoving backward, and also an economic slump as in 「景気後退」; 「下落」 describes price, value, or rank falling.
• Related縮小しゅくしょうNeutralA shrinking of scale or scope, as in 「事業縮小」, usually transitive; 「下落」 is about price or value going down.
• Related衰えおとろえNeutralNative-Japanese noun for weakening strength, ability, or momentum, as in 「体の衰え」; not used for prices.
• Related減衰げんすいWrittenWritten style, for gradual attenuation of signals, energy, vibration and the like, mostly in science and engineering; 「下落」 is about prices.
• Related漸減ぜんげんWrittenWritten style, for a gradual decrease in quantity, stressing slowness; 「下落」 is a fall in price or value without that nuance.
• Related低減ていげんWrittenWritten style, for lowering or reducing, mostly costs and risks, as in 「コスト低減」, usually transitive.
• Related凋落ちょうらくWrittenWritten style; literally flowers withering, mostly for old families or powers falling into decay; 「下落」 is about price or value.
• Related衰微すいびWrittenWritten style, for things once flourishing going into decline, such as traditions or family businesses; 「下落」 is about price or value.
• Related落ち込みおちこみNeutralNoun for slumping results or sales, or low spirits; 「下落」 mostly describes price, value, or rank falling.
• Antonym上昇じょうしょうNeutralAntonym: a rise in position or degree, as in 「株価上昇」 — the opposite of 「下落」's fall.
• Antonym高騰こうとうWrittenAntonym: a sharp rise in prices, the opposite of 「下落」, but stresses the steepness; 「下落」 does not stress magnitude.

Use 「下落」 for falls in price, market value, worth, or rank. For declining ability, quality, or level pick 「低下」; for drops in position or figures 「下降」; for decreases in quantity 「減少」; for economic slumps 「後退」. Written-style words like 「低落」「衰退」「減退」 suit formal prose, while 「下がる」「減る」 are everyday verbs and 「ダウン」 is colloquial.

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

1. 価値かち・相場そうば・等級とうきゅうなどが下さがること。