厳正|げんせいgensei[0]heiban (flat)

1. na-adjective, nounstrict; rigid; exact; fair; impartial

• SynonymフェアCasualColloquial loanword for fair, aboveboard dealing; it also means a fair or trade show, a sense 厳正 never has.
• Synonym公正こうせいNeutralFairness and impartiality; more common than 厳正 in everyday use, while 厳正 adds a nuance of strictness and no favoritism.
• Synonym公平こうへいNeutralFair treatment without favoring anyone; 厳正 goes further by stressing strict, rigorous execution.
• Related公明正大こうめいせいだいWrittenA written four-character term for acting openly and uprightly with no selfish motives; 厳正 stresses strict fairness in applying rules.
• Related平等びょうどうNeutralEquality — treating everyone alike with no discrimination, as in 「男女平等」; unlike 厳正 it does not stress strictness.
• Related客観的きゃっかんてきWrittenWritten term meaning objective — not swayed by personal feelings; 厳正 instead stresses strict execution.
• Related適正てきせいNeutralAppropriateness or reasonableness, as in 「適正価格」; unlike 厳正 it does not stress strictness.
• Related無私むしWrittenWritten word for having no selfish motives, as in 「公平無私」; it names the absence of self-interest rather than strict fairness.
• Related正しいただしいNeutralA broad word for right or correct; it covers much more than fairness and does not specifically imply it.
• Related中正ちゅうせいWrittenWritten word for impartiality — not leaning to either side; rarely used, and close in sense to 厳正.
• Related至公しこうFormalFormal word for perfect, utmost fairness; very rarely used — 厳正 is the more common choice.
• Antonym不公正ふこうせいNeutralUnfairness or injustice — the direct opposite of the strict fairness that 厳正 denotes.
• Antonym恣意的しいてきWrittenWritten word for arbitrary, willful action done as one pleases; the opposite of 厳正's strict adherence to rules.

For plain fairness use 「公平」 or 「公正」. Use 「厳正」 for strict, impartial execution of reviews, penalties and the like, as in 「厳正な審査」 or 「厳正に対処する」. For arbitrary action say 「恣意的」.

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

1. 厳きびしく、また、正ただしいこと。厳格げんかくで公正こうせいであること。そのようなさま。