厚い・篤い|あついatsui[0]heiban (flat)
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Which spelling to use
厚い厚い is the more common written form and the usual choice for learners when expressing “thick,” “deep,” “heavy,” or “kind.”
篤い篤い is a less common written variant of 厚い; learners will encounter it less often and should generally choose 厚い instead.
Definitions
- i-adjectivethick; deep; heavy
- i-adjectivekind; cordial; hospitable; warm; faithful
- i-adjectiveserious (of an illness)
- i-adjectiveabundant
Conjugation
| Plain form | 厚い（あつい） |
|---|---|
| Polite (desu) | 厚いです（あついです） |
| Negative (kunai) | 厚くない（あつくない） |
| polite (ku arimasen) | 厚くありません（あつくありません） |
| Past (katta) | 厚かった（あつかった） |
| Past negative (kunakatta) | 厚くなかった（あつくなかった） |
| Te form (kute) | 厚くて（あつくて） |
| Adverbial (ku) | 厚く（あつく） |
| Conditional (kereba) | 厚ければ（あつければ） |
| kattara | 厚かったら（あつかったら） |
Common forms generated by rule; see the senses for honorific or irregular usage.
Synonyms & antonyms
- Synonym厚手あつでNeutralFor cloth, paper and similar materials with a thick texture; often used attributively, as in 「厚手のセーター」.
- Synonym分厚いぶあついCasualColloquial. Means quite thick or chunky, a stronger degree than 「厚い」, as in 「分厚い辞書」.
- Synonym肉厚にくあつNeutralDescribes thick flesh or thick parts; mostly used for food, as in 「肉厚のステーキ」.
- Antonym薄いうすいNeutralThe antonym of 「厚い」: thin, with little thickness; also used for pale colors and light, diluted flavors.
Use 「厚い」 as the default for thick. For something very thick say 「分厚い」; for thick cloth or paper 「厚手」; for thick, meaty food 「肉厚」. The opposite, thin, is 「薄い」.
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
