蒸し暑い・むし暑い・蒸暑い|むしあついmushiatsui[4]nakadaka (mid-high)
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Which spelling to use
蒸し暑い蒸し暑い is the most common and most standard written form. Beginners should use it in ordinary writing.
むし暑いむし暑い is a less common written variant of 蒸し暑い. You may encounter it in writing, but beginners should generally choose 蒸し暑い.
蒸暑い蒸暑い is the least common of these written forms. You may encounter it occasionally, but beginners should choose 蒸し暑い instead.
Definitions
- i-adjectivehumid; sultry
Conjugation
| Plain form | 蒸し暑い（むしあつい） |
|---|---|
| Polite (desu) | 蒸し暑いです（むしあついです） |
| Negative (kunai) | 蒸し暑くない（むしあつくない） |
| polite (ku arimasen) | 蒸し暑くありません（むしあつくありません） |
| Past (katta) | 蒸し暑かった（むしあつかった） |
| Past negative (kunakatta) | 蒸し暑くなかった（むしあつくなかった） |
| Te form (kute) | 蒸し暑くて（むしあつくて） |
| Adverbial (ku) | 蒸し暑く（むしあつく） |
| Conditional (kereba) | 蒸し暑ければ（むしあつければ） |
| kattara | 蒸し暑かったら（むしあつかったら） |
Common forms generated by rule; see the senses for honorific or irregular usage.
Synonyms & antonyms
- Related湿っぽいしめっぽいNeutralDamp, or a gloomy mood (「湿っぽい話」); it says nothing either way about heat, while 「蒸し暑い」 requires the air to be both humid and hot.
- Related多湿たしつNeutralMeans high humidity (「高温多湿」), used mostly in instruction manuals and weather reports.
- Related湿潤しつじゅんWrittenWritten/formal word for moist or humid (「湿潤な気候」), used mainly of climate and geography.
- Antonym乾燥かんそうNeutralDry or dried out; the direct opposite of the damp, muggy heat of 「蒸し暑い」.
Use 「蒸し暑い」 for still, hot and humid weather (「梅雨は蒸し暑い」). 「湿っぽい」 is plain dampness, hot or not, or a gloomy mood; for weather reports and manuals say 「高温多湿」, and 「湿潤」 in formal writing on climate; the opposite is 「乾燥」.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese definitions
Kanji in this word
English equivalents
