快活・快闊・快濶・快豁|かいかつkaikatsu[0]heiban (flat)
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Which spelling to use
快活快活 is the most common written form, used for cheerful, lively, or lighthearted descriptions. It is the form beginners should use.
快闊快闊 is a less common kanji-only written variant of 快活 and is rarely used; learners will seldom encounter it.
快濶快濶 is less common than 快活 and 快闊. This kanji-only written variant is rarely used and is mainly worth recognizing when encountered.
快豁快豁 is the least common written form among these kanji-only variants and is rarely used; learners will seldom encounter it.
Definitions
- na-adjectivecheerful; lively; lighthearted
Conjugation
| Plain form | 快活（かいかつ） |
|---|---|
| Polite (desu) | 快活です（かいかつです） |
| Negative (dewa nai) | 快活ではない（かいかつではない） |
| polite (dewa arimasen) | 快活ではありません（かいかつではありません） |
| Past (datta) | 快活だった（かいかつだった） |
| Past negative (dewa nakatta) | 快活ではなかった（かいかつではなかった） |
| Te form (de) | 快活で（かいかつで） |
| Adverbial (ni) | 快活に（かいかつに） |
| Conditional (nara) | 快活なら（かいかつなら） |
Common forms generated by rule; see the senses for honorific or irregular usage.
Synonyms & antonyms
- Synonym朗らかほがらかNeutralDescribes a personality or mood that is bright and free of worries, with a gentle feel; also used of clear weather. 「快活」 has more energy and briskness.
- Synonym陽気ようきNeutralDescribes a cheerful, merry person, but also means weather or season, as in 「春の陽気」; 「快活」 has no weather sense.
- Synonym明朗めいろうWrittenA word of written prose for a bright, cheerful personality; it also covers openness and fairness, as in 「明朗会計」 — a sense 「快活」 lacks.
- Synonym活発かっぱつNeutralMeans active and energetic; applies to people but also to discussions, trade and the like, as in 「活発な議論」. 「快活」 leans toward temperament.
- Synonym元気げんきNeutralThe everyday word for being full of spirit or in good health, as in 「元気な子」. 「快活」 stresses a brisk, cheerful personality and carries no health sense.
- Synonym晴れ晴れしいはればれしいWrittenWritten word for feeling refreshed and bright once gloom has lifted; also of a clear sky. It stresses relief after worry, while 「快活」 stresses brisk, energetic cheer.
- Synonym晴れやかはれやかNeutralDescribes a face or mood suddenly bright and free of gloom, as in 「晴れやかな顔」; also of sunny weather. It points to a momentary state, not a personality.
- Related上機嫌じょうきげんNeutralRefers to a moment of excellent mood, as in 「上機嫌で帰る」; it describes an emotional state, while 「快活」 mostly describes personality and manner.
- Relatedご機嫌ごきげんCasualColloquial for being in a great mood, as in 「ご機嫌だね」; also the polite form of 「機嫌」. 「快活」 stresses briskness and vitality, not just a good mood.
- Antonym不愉快ふゆかいNeutralAntonym for feeling unpleasant or uncomfortable; it contrasts with the cheerful brightness of 「快活」 in whether the mood is pleasant.
- Antonym陰鬱いんうつWrittenWritten word for a gloomy, oppressive mood or atmosphere, as in 「陰鬱な表情」; it stands opposite to the bright briskness of 「快活」.
Use 「快活」 for a brisk, cheerful, energetic personality. For a gentler brightness pick 「朗らか」; for everyday pep or health pick 「元気」; for a momentary good mood pick 「上機嫌」. The antonyms 「不愉快」 and 「陰鬱」 mark the opposite mood.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese definitions
Kanji in this word
English equivalents
See also
