How to say "reduction" in Japanese

• 減少げんしょうJLPT N1approx.Common
  suru verb, transitive verb, intransitive verb, no-adjectiveCovers reduction as a decrease or decline in number, amount, or degree; it is the natural choice when simply stating that something has become smaller, without implying a deliberate act.
  あまりチームに頼たよりすぎると、個人こじんの闘争とうそう本能ほんのうが減少げんしょうするかもしれない。↗

  When you rely on the team too much, it may reduce your individual competitive instincts.
• 軽減けいげんJLPT N1approx.Common
  noun, suru verb, transitive verb, intransitive verbCovers reduction as abatement or easing; used when a burden, risk, or strain is lightened or made less severe rather than eliminated.
• 縮小しゅくしょうJLPT N2approx.Common
  noun, suru verb, transitive verb, intransitive verbCovers reduction as curtailment or a cutback in scale, size, or scope; typical when an organization, plan, or operation is made smaller.
  縮小しゅくしょうコピーを撮とってくるよ。↗

  I'm going to make reduced copies.
• 減額げんがくCommon
  noun, suru verb, transitive verbCovers reduction especially in price or cost; the word you want when the reduction is specifically an amount of money being lowered.
• 削減さくげんJLPT N1approx.Common
  noun, suru verb, transitive verbCovers reduction as a cut or curtailment, usually a deliberate one; typical for trimming budgets, spending, or staff.
  彼女かのじょは支出ししゅつを徐々じょじょに削減さくげんした。↗

  She pared down her expenditures.

Use 減少 for decreases in quantity, 軽減 for easing burdens, 縮小 for shrinking scale, 減額 for reductions in price or cost, and 削減 for deliberate cuts.

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

• 減少げんしょうdecrease
• 軽減けいげんabatement
• 縮小しゅくしょうreduction
• 減額げんがくreduction (esp. in price or cost)
• 削減さくげんcut
• 短縮たんしゅくshortening
• 割引わりびきdiscount
• 低減ていげんdecrease
• 引き下げひきさげreduction
• 縮減しゅくげんreduction
• 減反げんたんreduction (of crop size)
• 減りへりdecrease
• 解消かいしょうcancellation
• 減げんreduction
• 約分やくぶんreduction (of a fraction to its lowest terms)
• リダクションreduction
• 減弱げんじゃくreduction
• 減等げんとうreduction
• 減却げんきゃくreduction
• 通約つうやくreduction (of a fraction to its lowest terms)
• 矮小化わいしょうかreduction (in size)
• 減枠げんわくreduction (of an allowance, limit, quota, etc.)
• 減力げんりょくreduction (of a negative)
• カットomission
• 還元かんげんreduction
• 帰着きちゃくreduction
• 目減りめべりdecrease (in value)
• 約やくshortening