許可|きょかkyoka[1]atamadaka (head-high)

1. noun, suru verb, transitive verbpermission; approval; authorization; license
   ここでの喫煙きつえんは許可きょかされていません。↗

   Smoking is not permitted here.

• Synonym認可にんかFormalFormal: approval granted by an official body after certifying someone's qualifications, as in 「認可保育園」; common in administrative procedures.
• SynonymＯＫオッケーCasualColloquial way to say something is fine or allowed, as in 「OKが出る」; the most casual option.
• SynonymライセンスNeutralLoanword for licenses and permits, including copyright licenses, as in 「ライセンス契約」.
• Synonym許すゆるすNeutralEveryday verb for allowing, and also forgiving, as in 「外出を許す」; more colloquial than 「許可する」.
• Synonym免許めんきょNeutralAn authority lifting a general ban for specific people or granting a qualification; also the license itself, as in 「運転免許」. 「許可」 broadly covers allowing actions.
• SynonymパーミッションNeutralLoanword used mainly for computer access permissions, as in 「パーミッション設定」; in everyday speech say 「許可」.
• Synonym允許いんきょWrittenRare written word meaning the same as 「許可」; use 「許可」 in everyday speech.
• Synonym裁可さいかWrittenWritten word for a monarch sanctioning a matter; confined to historical and constitutional contexts.
• Related承認しょうにんNeutralFormal recognition or approval, as in 「承認を得る」; typical for approvals within an organization.
• Related認めるみとめるNeutralCovers recognizing or acknowledging something as well as permitting it, as in 「入国を認める」; a broader word than 「許可」.
• Related認定にんていNeutralCertifying qualifications or facts after review, as in 「資格認定」; centers on determination, while 「許可」 centers on allowing an action.
• Related容認ようにんNeutralTo tolerate or accept, as in 「容認できない」; often implies accepting something reluctantly.
• Related許容きょようNeutralTo allow something within set limits, as in 「許容範囲」; centers on the bounds of tolerance.
• Related許しゆるしNeutralNoun for permission or forgiveness, as in 「許しを請う」; more colloquial than 「許可」 and carries the sense of pardon.
• Related授権じゅけんWrittenLegal term for conferring authority on someone, as in agency relationships; rare outside such contexts — say 「許可」 or 「権限を与える」.
• Relatedお墨付きおすみつきNeutralAn endorsement or guarantee from an authority figure, as in 「専門家のお墨付き」; common in conversation.
• Related公認こうにんNeutralOfficial recognition by public bodies or organizations, as in 「公認会計士」 and 「党の公認」.
• Related是認ぜにんWrittenWritten word for judging something right and approving it, as in 「是認しがたい」; mostly in expository prose.
• Related聞き届けるききとどけるWrittenTo hear a request and grant it, as in 「願いを聞き届ける」; tends toward written style.
• Related聞き入れるききいれるNeutralTo accept and comply with someone's request, as in 「頼みを聞き入れる」; stresses taking in the request itself.
• Related認許にんきょWrittenRare formal word for approving and permitting; say 「認可」 or 「許可」 in everyday use.
• Relatedご了承ごりょうしょうFormalPolite, formal term for asking someone's understanding and acceptance, as in 「ご了承ください」; common in notices.
• Antonym禁止きんしNeutralProhibition or a ban; the direct opposite of 「許可」.
• Antonym拒否きょひNeutralRefusing or rejecting a request, as in 「申請を拒否する」; the opposite of granting permission.

To allow an action, 「許可」 is the default, in both official and everyday contexts. Use 「認可」 for official approval after certifying qualifications, 「承認」 for approvals within an organization, and 「許す」 in daily speech. For licenses say 「免許」. The opposites are 「禁止」 and 「拒否」.

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

1. （きょか）要望ようぼうを聞き届ききとどけ、その行為こういや行動こうどうを公式こうしきに認みとめること。