公正|こうせいkousei[0]heiban (flat)

1. noun, na-adjectivejustice; fairness; impartiality
   王おうは自分じぶんの王国おうこくを公正こうせいに治おさめた。↗

   The king ruled his kingdom justly.

• Synonym公平こうへいNeutralEvenhanded treatment of all sides without favoritism; works for judgments, treatment and distribution, while 「公正」 stresses being right and proper.
• Synonym公明正大こうめいせいだいWrittenWritten four-character word for being open, upright and selfless; stresses a candid, aboveboard attitude more than fair judgment.
• Synonym公明こうめいWrittenWritten word pairing fairness with openness, as in 「公明選挙」; also the abbreviation of the Komeito political party.
• Synonym厳正げんせいWrittenWritten word for strict, rigorous fairness, as in 「厳正な審査」; the emphasis falls on strictness.
• SynonymフェアCasualColloquial loanword for fair, sportsmanlike conduct, used mostly in sports, as in 「フェアプレー」.
• Synonym中正ちゅうせいWrittenWritten term for staying impartial without leaning to either side; little used in modern Japanese.
• Synonym至公しこうWrittenRare written word for utterly selfless fairness; in daily conversation say 「公正」 or 「公平」.
• Antonym不公平ふこうへいNeutralAntonym for unfair or biased treatment, as in 「不公平な扱い」; the direct opposite of 「公正」.
• Antonym偏りかたよりNeutralA lean or bias toward one side; contrasts with 「公正」, which implies no favoritism.
• Antonym不正ふせいNeutralImproper or fraudulent conduct, as in 「不正行為」; the opposite of 「公正」 in dealings.

Use 「公正」 for impartial, proper judgments and dealings, as in 「公正取引」. Pick 「公平」 for even-handed treatment of everyone alike, 「厳正」 for strict fairness such as screening, 「フェア」 for sporting fairness, and 「不正」 for cheating or fraud.

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

1. 公平こうへいで、かつ正ただしいこと。