合理化|ごうりかgourika

1. noun, suru verb, transitive verbrationalization; making (something) conform to reason; justification
2. noun, suru verb, transitive verbrationalization (of a company, industry, etc.); rationalisation; streamlining; making more efficient
   抜本的ばっぽんてきな合理化ごうりかのおかげで、わが社しゃの利益りえきは３倍ばいに増ふえた。↗

   Thanks to a fundamental restructuring, our surplus has swelled three-fold.
3. noun, suru verb, transitive verb, psychologyrationalization

• SynonymラショナリゼーションNeutralLoanword meaning rationalization, including the psychological sense of self-rationalization. Leans academic or translation-style; rare in everyday use.
• Antonym非合理ひごうりWrittenWritten/formal noun for the illogical or irrational—what lacks logic or coherence. The opposite of 「合理化」.
• Antonym非効率ひこうりつWrittenWritten/formal noun for inefficiency—wasted time, effort, or money. The opposite of 「合理化」 in its improve-efficiency sense.

For streamlining a business or justifying yourself, pick 「合理化」, as in 「業務の合理化」. Use the loanword 「ラショナリゼーション」 in academic contexts. For inefficiency say 「非効率」; for what defies logic, 「非合理」.

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

1. 物事ものごとが理屈りくつに合あうように説明せつめいしたり、正当化せいとうかしたりすること。
2. 会社かいしゃや産業さんぎょうの仕事しごとのやり方かたを効率的こうりつてきで無駄むだのないものに改善かいぜんすること。
3. 心理学しんりがくで、自分じぶんの行動こうどうや考かんがえを後付あとづけで正当せいとうな理由りゆうで説明せつめいすること。