How to say "commitment" in Japanese

• コミットCommon
  noun, suru verb, intransitive verbCovers personal commitment or involvement — one's own buy-in to a task, project, or goal. Common in business and tech contexts, often for a person or team dedicating themselves to something.
• 言質げんちCommon
  nounA commitment in the sense of a pledge or promise extracted from someone, typically spoken words that can later be held against them. Use when the point is that someone has given their word.
  彼かれは言質げんちをとられた。↗

  He got himself committed to it.
• 付託ふたくCommon
  noun, suru verb, transitive verbCommitment in the procedural sense of committal or submission — formally referring a bill, matter, or case to a committee or other body. It is this narrow parliamentary or administrative sense, not personal dedication.
• 投入とうにゅうJLPT N1approx.Common
  noun, suru verb, transitive verbCommitment of resources: investing or injecting funds, personnel, or effort into a project or operation. Use when the emphasis is on deploying resources rather than on a promise or personal involvement.
  敵てきは新しん兵力へいりょくを投入とうにゅうした。↗

  The enemy flung fresh troops into the battle.

Choose 「コミット」 for personal involvement or buy-in, 言質 for a verbal pledge or promise, 付託 for formally referring a matter to a committee, and 投入 for committing funds or personnel to something.

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

• コミットcommitting (oneself to)
• 言質げんちcommitment
• 付託ふたくcommittal
• 建てたてcontract
• コミットメントcommitment
• トランザクションコミットメントtransaction commitment
• 投入とうにゅうinvestment