よろしい・宜しいyoroshii[3]nakadaka (mid-high)

1. i-adjectivegood; OK; all right; fine; very well; will do; may; can
   あなたに頼たのんでもよろしいですか。↗

   May I request a favour of you?

• Synonym良いよいNeutralThe plain word for 'good; fine', used in writing or a slightly formal tone; 「宜しい」 is more polite and mostly for giving or asking permission.
• SynonymいいCasualThe colloquial form of 「良い」, as in 「いい天気」. The everyday default, far more casual than 「宜しい」.
• Synonym良好りょうこうWrittenWritten/formal prose for a good state or result, as in 「経過良好」. It is an objective assessment, not a polite reply like 「宜しい」.
• SynonymグッドCasualLoanword used mostly as a prefix, as in 「グッドタイミング」 and 「グッドアイデア」. 「宜しい」 is the courteous spoken equivalent.
• SynonymＯＫオッケーCasualColloquial for agreement or permission, as in 「OK です」. More casual than 「宜しい」.
• Synonym結構けっこうNeutralMeans fine or sufficient, but 「結構です」 can also be a polite refusal ('no, thank you') — easily confused.
• Related適正てきせいWrittenWritten/formal word for reasonable and proper, as in 「適正価格」. It stresses meeting a standard, not permission.
• Related適当てきとうNeutralMeans suitable or appropriate, but in speech it can also mean careless or half-hearted, as in 「適当に答える」 — easily ambiguous.
• Related適切てきせつWrittenWritten/formal word for exactly fitting the need, as in 「適切な処置」. It judges aptness, not permission.
• RelatedふさわしいNeutralMeans befitting or worthy of someone, as in 「彼に相応しい仕事」. It stresses matching a person or occasion.
• Related立派りっぱNeutralMeans splendid or impressive, as in 「立派な家」. It praises something admirable, a much stronger judgement than 「宜しい」.
• Related妥当だとうWrittenWritten/formal word for valid and defensible, as in 「妥当な判断」. It stresses that a judgement holds up.
• Related好ましいこのましいWrittenWritten/formal word for desirable or welcome, as in 「好ましい結果」.
• Related素晴らしいすばらしいNeutralMeans outstanding or wonderful, as in 「素晴らしい景色」. Its degree of praise far exceeds 「宜しい」.
• Related素敵すてきCasualColloquial for charming or lovely, as in 「素敵な服」. It stresses attractiveness.
• Related好都合こうつごうNeutralMeans convenient or favorable, as in 「好都合な時間」. It stresses that timing suits one's purposes.
• Related上々じょうじょうCasualColloquial for first-rate, as in 「天気は上々」. It rates things higher than 「宜しい」.
• Related無難ぶなんNeutralMeans safe and unremarkable, as in 「無難な選択」. It stresses nothing goes wrong, though nothing shines.
• Related適したてきしたNeutralMeans suited to a purpose, as in 「料理に適した器」. It highlights fitness for use, not politeness.
• RelatedしかるべきWrittenWritten/formal pre-noun word for due or proper, as in 「しかるべき処置」. It marks what is called for.
• Relatedそれ相応それそうおうNeutralMeans proportionate to the case, as in 「それ相応の報酬」. It stresses matching in degree.
• Antonym悪いわるいNeutralThe direct opposite: bad or poor, as in 「天気が悪い」.
• Antonym不可ふかWrittenWritten/formal opposite of the permission sense: not allowed or a failing grade.

Use 「宜しい」 to say 'good' or 'that's fine' in a polite, formal way, especially for permission. For everyday use pick 「良い」 or 「いい」; for a good state or result 「良好」; for 'appropriate' 「適切」 or 「妥当」; for 'befitting' 「相応しい」; for outstanding praise 「素晴らしい」. The opposite is 「悪い」.

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

1. 「よい」の改あらたまった言い方いいかた。
2. 許容きょようできる。差支さしつかえない。
3. 承知しょうちした時ときに用もちいる語ご。