低減|ていげんteigen[0]heiban (flat)

1. noun, suru verb, transitive verb, intransitive verbdecrease; reduction; fall; depreciation; mitigation
   産婦人科医さんふじんかいが減へっているのは出生数しゅっしょうすうの減少げんしょうで医療いりょうニーズが低減ていげんしたのを反映はんえいしている。↗

   The reduction in obstetricians and gynecologists is a reflection of the decrease in births, thus reducing need for medical care.

• Synonym減少げんしょうNeutralNeutral noun for a decrease in quantity, natural or deliberate, as in 「人口減少」; 「低減」 leans toward deliberately lowering costs or risks.
• Synonym低下ていかNeutralNeutral noun for a drop in ability or quality, as in 「体力の低下」; it stresses a level getting worse, not a deliberate cut.
• Synonym減るへるNeutralNeutral verb for a quantity shrinking, as in 「体重が減る」; common in speech and covers natural or deliberate loss alike.
• Synonym引き下げひきさげNeutralNeutral noun for lowering prices or interest rates, as in 「金利の引き下げ」; stresses deliberate downward adjustment.
• Synonym軽減けいげんWrittenWritten noun for lightening a burden or pain, as in 「税負担の軽減」; the focus is on making the load less heavy for whoever bears it.
• Synonym減らすへらすNeutralNeutral transitive verb for making quantities smaller, as in 「ゴミを減らす」; everyday, while 「低減」 is a more written Sino-Japanese noun.
• Synonym減額げんがくWrittenWritten noun for cutting a sum of money, as in 「給与の減額」; restricted to monetary amounts.
• Synonym減殺げんさいWrittenWritten noun for diminishing an effect or interest, as in 「効果を減殺」; stiff literary word, rare in speech.
• Synonym減りへりNeutralNeutral noun for the degree of decrease or consumption, as in 「減りが早い」; colloquial, unlike the formal 「低減」.
• Related下落げらくWrittenWritten noun for prices or market rates falling, as in 「株価の下落」; typical of economic data and market movements rather than deliberate lowering.
• Related下降かこうNeutralNeutral noun for position or values moving down, as in 「気温の下降」; stresses downward movement rather than deliberate reduction.
• Related低落ていらくWrittenWritten noun for markets or popularity sagging, as in 「人気の低落」; literary and relatively rare.
• RelatedさがるNeutralNeutral verb with broad uses — descending, stepping back, hanging — as in 「熱が下がる」; much wider in range than 「低減」.
• Related縮小しゅくしょうNeutralNeutral noun for shrinking scale or scope, as in 「事業縮小」; the focus is on the size or extent of something getting smaller.
• Related削減さくげんNeutralNeutral noun for cutting budgets or staff, as in 「経費削減」; implies firm, deliberate cuts rather than a general decrease.
• Related減量げんりょうNeutralNeutral noun for losing weight or reducing quantities, as in a boxer's pre-match 「減量」; tied to weight or amounts.
• Related減退げんたいWrittenWritten noun for appetite, stamina or other functions weakening, as in 「食欲減退」; about decline, not cutting costs.
• Related節減せつげんWrittenWritten noun for economizing on expenses, as in 「経費節減」; stresses saving through frugal use, not just cutting.
• Related削るけずるNeutralNeutral verb for shaving or planing, or for cutting down and deleting, as in 「予算を削る」; common in speech.
• RelatedさがりNeutralNeutral noun for a drop or for hanging things, and even old hand-me-downs like 「お下がり」; a mixed-use, grab-bag word.
• Related縮減しゅくげんWrittenWritten noun for scaling down, close to 「縮小」 but rarer; keep it for formal prose.
• RelatedカットNeutralNeutral loanword for cutting or omitting, as in 「給料カット」; casual and common in speech, unlike the more formal 「低減」.
• Antonym増加ぞうかNeutralNeutral antonym for an increase in quantity, as in 「人口増加」; the direct opposite of 「低減」.
• Antonym増大ぞうだいWrittenWritten antonym for growing larger, as in 「負担の増大」; the opposite pole to 「低減」 in formal prose.
• Antonym上昇じょうしょうNeutralNeutral antonym for rising values or prices, as in 「価格上昇」; the opposite of 「低減」's lowering.

Use 「低減」 when you deliberately lower costs, risks or burdens, as in 「コスト低減」. For quantities simply decreasing, pick 「減少」 or the verb 「減る」; for cutting budgets, 「削減」; for easing burdens, 「軽減」; for lowering prices or rates, 「引き下げ」. For the opposite idea of increase, use 「増加」 or 「増大」.

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

1. 減へること。