良好|りょうこうryoukou[0]heiban (flat)

1. na-adjective, noungood; fine; excellent; favorable; favourable; satisfactory
   それに比くらべ最近さいきん彼女かのじょのお天気てんきは良好りょうこう。↗

   In comparison to which she's been in a really good mood recently.

• Synonym良いよいNeutralThe most basic word for 'good'; 「良好」 is the more written choice for describing states, results or grades as good.
• SynonymよろしいFormalFormal; means 'good' or 'all right', as in 「よろしいですか」; mostly used for polite confirmations.
• SynonymいいCasualColloquial; 'good, fine' — the most common everyday word, while 「良好」 belongs in written reports.
• Synonym好ましいこのましいWrittenWritten/formal prose; 'desirable', as in 「好ましい結果」; stresses that something meets expectations.
• Synonym素晴らしいすばらしいNeutral'Wonderful', as in 「素晴らしい景色」; a far higher degree of praise than 「良好」.
• Synonym立派りっぱNeutral'Splendid, impressive', as in 「立派な人」; suggests something or someone worthy of admiration.
• Synonym素敵すてきCasualColloquial; 'lovely, charming', as in 「素敵な服」; about aesthetic appeal.
• Synonym上々じょうじょうNeutral'Very good', as in 「上々の出来」; emphasizes results being highly satisfactory.
• Synonym好調こうちょうNeutral'Going well', as in 「好調な売れ行き」; about favorable momentum or condition.
• SynonymグーCasualColloquial; 'good, great', often said with a thumbs-up; light and playful.
• SynonymグッドCasualLoanword; 'good', as in 「グッドタイミング」; casual and relaxed.
• Synonym結構けっこうNeutralCan mean 'quite fine' or 'no, thank you', as in 「結構です」; many senses, so read the context.
• Synonym満足まんぞくNeutral'Satisfied, satisfactory', as in 「結果に満足する」; centers on the subjective feeling.
• Synonym優良ゆうりょうNeutralWritten/formal prose; 'superior, excellent', as in 「優良企業」; suggests being graded or ranked above the rest.
• Synonym良質りょうしつNeutral'Good quality', as in 「良質なたんぱく質」; specifically about quality.
• Synonym優れたすぐれたNeutralUsed attributively; 'outstanding', as in 「優れた技術」; highlights exceptional ability or quality.
• Related十分じゅうぶんNeutral'Sufficient, enough', as in 「十分な準備」; about meeting the required level, not judging good or bad.
• Related健全けんぜんNeutral'Sound, healthy', as in 「健全な経営」; stresses that something functions normally.
• Related無難ぶなんNeutral'Safe, unremarkable', as in 「無難な選択」; not outstanding, but free of risk or error.
• Related大丈夫だいじょうぶCasualColloquial; 'all right, no problem', as in 「大丈夫です」; a reassuring confirmation.
• Related適切てきせつNeutral'Appropriate', as in 「適切な判断」; about fitting the situation, not the degree of goodness.
• Related見事みごとNeutral'Splendid, masterly', as in 「見事な演技」; draws admiration for how well something is done.
• Related元気げんきNeutral'Lively, healthy', as in 「元気な子供」; about physical and mental condition.
• Related適当てきとうNeutralCan mean 'appropriate' but also 'offhand, careless', as in 「適当に答える」; watch for the opposite senses.
• Related壮健そうけんWrittenWritten/formal prose; 'robust, in strong health'; rare today, seen mostly in letter greetings.
• Antonym不良ふりょうNeutralAntonym; 'poor, defective', as in 「体調不良」; the direct opposite of 「良好」.
• Antonym悪質あくしつNeutralAntonym; 'malicious, shoddy', as in 「悪質な業者」; the opposite of 「良好」.

Use 「良好」 for good states, results, grades or relations; it leans toward written style, as in 「経過良好」 and 「良好な関係」. In everyday speech say 「いい」 instead. For things going smoothly use 「好調」, and for good quality use 「良質」. The direct opposite is 「不良」. For much stronger praise, 「素晴らしい」 fits; for 'enough', 「十分」.

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

1. 状態じょうたいや結果けっか、成績せいせきが良よく、このましいこと。