How to say "decision" in Japanese

• 決定けっていJLPT N3approx.Common
  noun, suru verb, transitive verb, intransitive verbThe general word for a decision — the act or result of settling a matter so that it is fixed, often at a meeting or by an organization.
  われわれは最終的さいしゅうてき決定けっていを行おこなった。↗

  We've made a final decision.
• 確定かくていJLPT N1approx.Common
  noun, suru verb, transitive verb, intransitive verbRarely the word you want for a decision as such: it really describes something being confirmed or becoming final — a settlement or establishment — rather than the act of deciding.
  月曜げつようまでに確定かくてい見積みつもりが必要ひつようです。↗

  We need a firm quotation by Monday.
• 決断けつだんJLPT N1approx.Common
  noun, suru verb, transitive verbA decision in the sense of making up one's mind and committing to it, often under pressure; it carries a nuance of resolve and decisiveness, typical of bold personal choices.
  決断けつだんの日ひは近ちかい。↗

  The day of decision is at hand.
• 判断はんだんJLPT N3approx.Common
  noun, suru verb, transitive verbA decision as the conclusion reached after weighing a situation — a judgment call. Typical when the emphasis is on assessing the facts and deciding what is true or what to do.
  私は君きみの判断はんだんを尊重そんちょうする。↗

  I defer to your judgement.
• 判定はんていJLPT N1approx.Common
  noun, suru verb, transitive verbA decision in the sense of an official ruling or verdict on a case or contest, handed down by a referee, judge or similar authority rather than made as a choice.
  審判しんぱんの判定はんていは絶対ぜったいだ。↗

  The judge's decision is final.

Choose 決定 for a decision that settles a matter, 決断 for a resolute personal decision, 判断 for a judgment call, 判定 for an official ruling, and 確定 only when something is finalized or confirmed rather than decided.

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

• 決定けっていdecision
• 確定かくていdecision
• 決断けつだんdecision
• 判断はんだんjudgment
• 判定はんていjudgement
• 決意けついdecision
• 断だんdecision
• 決けつdecision
• 策定さくていformulation (of a plan, policy, etc.)
• 審判しんぱんjudgement
• 決着けっちゃくconclusion
• 決議けつぎresolution
• 裁きさばきjudgment
• 断定だんていconclusion
• 議決ぎけつresolution
• 裁定さいていdecision
• 取り決めとりきめdecision
• 評決ひょうけつdecision
• 裁決さいけつdecision
• 決裁けっさいsanction
• 定めさだめlaw
• 決めきめagreement
• デシジョンdecision
• 踏ん切りふんぎりdetermination
• 断案だんあんconclusion
• 論判ろんぱんjudgement (on whether something is right or wrong)
• 処決しょけつsettlement
• 了見りょうけんidea
• ジャッジjudgement
• 裁断さいだんjudgement