低落|ていらくteiraku[0]heiban (flat)

1. noun, suru verb, intransitive verbfall; decline; slump
   ドルの価値かちは最近さいきん低落ていらくした。↗

   The value of the dollar has fallen recently.

• Synonym低下ていかNeutralCovers drops in ability or numerical values and is the most widely used of these words, as in 「視力の低下」; 「低落」 stresses prices or morale sinking into a slump.
• Synonym下落げらくNeutralAn economic term for prices or market quotations falling; it homes in on market prices, while 「低落」 also covers morale and status.
• Synonym下降かこうNeutralDescribes position or degree moving down, as in 「飛行機の下降」 or 「気温の下降」; it does not carry the sense of a slump that 「低落」 has.
• Synonym減退げんたいWrittenWritten/formal prose for functions such as appetite weakening; it centres on bodily functions, unlike 「低落」's prices and morale.
• SynonymさがるNeutralAn everyday verb for going down or stepping back, as in 「熱が下がる」; 「低落」 is written prose for slumps in prices or morale.
• SynonymさがりNeutralA colloquial noun with mixed uses: decline, hanging down, even offerings to the gods; 「低落」 is narrowly about slumps.
• Synonym凋落ちょうらくWrittenWritten/formal prose with a literary flavour for withering or decline, often of a family's fortunes or influence.
• Related低減ていげんWrittenWritten/formal prose for reducing or cutting something, stressing deliberate curtailment, as in 「コスト低減」; 「低落」 describes a fall, not a cut.
• Related落ちるおちるNeutralA colloquial verb covering falling and dropping across the broadest range of uses; 「低落」 is a written noun for slumps in prices or morale.
• Related落ち込むおちこむNeutralA colloquial verb for feeling down or for business results slumping; 「低落」 is the written noun for prices and morale.
• Related減少げんしょうNeutralFocuses on quantities simply becoming fewer, as in 「人口減少」; 「低落」 suggests sinking into a slump rather than a mere drop in numbers.
• Related下り坂くだりざかNeutralA colloquial, vivid metaphor for going downhill, i.e. declining; 「低落」 states the slump plainly in written style.
• Related退潮たいちょうWrittenWritten/formal prose; an ebb-tide metaphor for waning power, stressing weakening momentum rather than the slump of 「低落」.
• Related落ち込みおちこみNeutralA colloquial noun for a downturn or dejection, as in 「景気の落ち込み」; 「低落」 is the written counterpart for prices and morale.
• Related下向くしたむくNeutralA verb for turning or pointing downward, also used for markets or conditions starting to worsen; an everyday word, unlike written 「低落」.
• Antonym上昇じょうしょうNeutralAntonym: rising or climbing; the direct opposite of 「低落」's sinking into a slump.
• Antonym向上こうじょうNeutralAntonym: improvement or advancement toward a better state; the opposite of 「低落」's falling off.

「低落」 is written prose for prices, morale or status sinking into a slump, as in 「物価の低落」「士気の低落」. For drops in ability or figures use 「低下」, for market prices 「下落」, for position or temperature 「下降」. Deliberate cuts take 「低減」, weakening bodily functions 「減退」, withering fortunes 「凋落」, waning momentum 「退潮」. In speech: 「落ちる」 to fall, 「落ち込む」/「落ち込み」 to feel down or slump, 「減少」 for shrinking numbers, 「下り坂」 for decline, 「下がる」 for everyday downward moves, 「下向く」 for worsening conditions. The antonyms are 「上昇」 and 「向上」.

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

1. 価値かちや価格かかくが下さがること。
2. 人気にんきや評価ひょうかなどが下さがること。