燃やす・燃す|もやすmoyasu[0]heiban (flat)
もすmosu[0]heiban (flat)
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Which spelling to use
燃やす燃やす is the more common written form and the recommended choice for beginners. It is written with a mixture of kanji and kana.
燃す燃す is a less common written variant of 燃やす. It is also written with a mixture of kanji and kana, but is not the recommended choice for beginners.
Definitions
- godan verb, transitive verbto burn
- godan verb, transitive verbto burn with (emotion, feeling); to be fired up
Conjugation
| Dictionary form | 燃やす（もやす） |
|---|---|
| Polite (masu) | 燃やします（もやします） |
| Negative (nai) | 燃やさない（もやさない） |
| polite (masen) | 燃やしません（もやしません） |
| classical zu / nu | 燃やさず・燃やさぬ（もやさず・もやさぬ） |
| Past (ta) | 燃やした（もやした） |
| polite (mashita) | 燃やしました（もやしました） |
| Past negative (nakatta) | 燃やさなかった（もやさなかった） |
| polite (masen deshita) | 燃やしませんでした（もやしませんでした） |
| Te form | 燃やして（もやして） |
| Potential | 燃やせる（もやせる） |
| Passive | 燃やされる（もやされる） |
| Causative | 燃やさせる（もやさせる） |
| Causative passive | 燃やさせられる（もやさせられる） |
| Conditional (ba) | 燃やせば（もやせば） |
| tara | 燃やしたら（もやしたら） |
| Volitional | 燃やそう（もやそう） |
| polite (mashou) | 燃やしましょう（もやしましょう） |
| Imperative | 燃やせ（もやせ） |
Common forms generated by rule; see the senses for honorific or irregular usage.
Transitive / intransitive pair
木が燃える
木を燃やす
燃える describes something burning by itself or as a natural process, while 燃やす indicates that an agent causes the burning.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Synonyms & antonyms
- Synonym焼くやくNeutralBurns something up or cooks it over heat — grill, bake, roast — as in 「ゴミを焼く」; 「燃やす」 is about getting a fire going or firing up passion.
- Synonym焚くたくNeutralAlso written 「焚く」, for burning things; when written 「焼く」 it covers cooking too — grilling meat, toasting bread — uses 「燃やす」 doesn't have.
- Related燃焼ねんしょうWrittenA written/formal prose term for burning or combustion, also for giving your all, as in 「完全燃焼」; leans scientific and figurative.
- Related焼却しょうきゃくWrittenWritten/formal prose for destroying something by burning, as in 「書類を焼却する」; typical objects are trash and documents.
- Related焚きつけるたきつけるNeutralMeans to light or kindle a fire, and by extension to incite someone, as in 「友達を焚きつける」; often used figuratively.
- RelatedくべるNeutralFeeds a fire — adding wood, coal or other fuel — as in 「薪をくべる」; the focus is on the act of adding fuel rather than the burning itself.
- Antonym消すけすNeutralPuts out fires and turns off lights; the antonym of 「燃やす」, which is about getting a fire going.
Use 「燃やす」 to make something burn or to fire up passion, as in 「闘志を燃やす」. For burning things up or grilling food say 「焼く」, for destroying by fire 「焼却」, for adding fuel 「くべる」; the opposite is 「消す」.
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
