功績|こうせきkouseki[0]heiban (flat)

1. nounachievement; meritorious deed; distinguished service; contribution
   イタリアンルネッサンスを開花かいかさせるきっかけを作つくったのはジョットの功績こうせきだ。↗

   Giotto is credited with sowing the seeds of the Italian Renaissance.

• Synonym手柄てがらCasualColloquial word for a deed of merit in a concrete incident, as in 「お手柄だ」; 「功績」 is the broader term for praiseworthy contribution.
• Synonym功労こうろうNeutralCovers merit together with the effort spent to earn it, as in 「功労者」 and 「功労賞」; it stresses the toil involved.
• Synonym偉業いぎょうWrittenWritten word for a great feat on a grand scale, as in 「前人未到の偉業」; the emphasis is on magnitude rather than merit.
• Synonym功名こうみょうWrittenWritten word for winning fame through a deed of merit, as in 「功名心」; it carries a nuance of seeking renown.
• Synonym功業こうぎょうWrittenWritten word for a notable exploit; rare in modern Japanese, where 「功績」 is the usual choice.
• Related業績ぎょうせきNeutralNeutral word for results achieved in business or research, as in 「会社の業績」; it stresses concrete results, while 「功績」 stresses contribution worthy of praise.
• Related事績じせきWrittenWritten word for the deeds and achievements a person has accomplished; often seen in biographies.
• Related功こうNeutralRead いたわり, it usually means consideration for others, as in 「労りの言葉」; it can also mean toil on someone's behalf and the merit earned.
• Related勲いさおWrittenWritten word for distinguished service with an archaic, dignified air, as in 「勲を立てる」.
• Antonym過失かしつNeutralA fault or blunder caused by carelessness; the standard opposite of 「功績」.
• Antonym罪過ざいかWrittenWritten word for a sin or fault; it stands opposite to praiseworthy 「功績」.

Use 「功績」 for a contribution worthy of praise, as in 「功績を称える」. For business or research results say 「業績」; for long toil and service 「功労」; for a merit in a concrete incident, colloquially 「手柄」; for a grand feat 「偉業」. 「事績」 and 「功業」 are rare written alternatives, 「労り」 leans toward consideration, 「勲」 is archaic, 「功名」 adds a nuance of seeking fame. The opposite is 「過失」, or written 「罪過」.

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

1. ほめたたえられる何なんかをなしとげ、社会しゃかい・組織そしき・団体だんたいなどに貢献こうけんした実績じっせき。てがら。いさお。