硬い

Japanese

Kanji in this term
硬
Grade: S

Etymology

From Old Japanese. First attested in the Kojiki of 712 CE.[1]

Pronunciation

  • (Tokyo) かたい [kàtáí] (Heiban – [0])
  • IPA(key): [ka̠ta̠i]
  • Tokyo pitch accent of inflected forms of "硬い"
Source: Online Japanese Accent Dictionary
Stem forms
Continuative (連用形) 硬く かたく [kàtákú]
Terminal (終止形) 硬い かたい
かた​い
[kàtáí]
[kàtáꜜì]
Attributive (連体形) 硬い かたい [kàtáí]
Key constructions
Informal negative 硬くない かたくな​い [kàtákúnáꜜì]
Informal past 硬かった かた​かった [kàtáꜜkàttà]
Informal negative past 硬くなかった かたくな​かった [kàtákúnáꜜkàttà]
Formal 硬いです かた​いです [kàtáꜜìdèsù]
Conjunctive 硬くて かた​くて [kàtáꜜkùtè]
Conditional 硬ければ かた​ければ [kàtáꜜkèrèbà]

Adjective

硬(かた)い • (katai) -i (adverbial 硬(かた)く (kataku))

  1. Keeping a material's shape that does not crack or break apart; hard.
    その研究所(けんきゅうじょ)はC60(シーろくじゅう)ナノ・ロッドを使(つか)ってダイヤモンドより硬(かた)い材料(ざいりょう)を開発(かいはつ)した。
    Sono kenkyūjo wa shī-rokujū nano roddo o tsukatte daiyamondo yori katai zairyō o kaihatsu shita.
    The lab developed a harder material than a diamond by using C60 nano-rods.
  2. Keeping one's appearance or facial expression; serious.
    緊張(きんちょう)していたのだろうか、彼(かれ)は硬(かた)い表情(ひょうじょう)をして法廷(ほうてい)に入(はい)ってきた。
    Kinchō shite ita no darō ka, kare wa katai hyōjō o shite hōtei ni haitte kita.
    Perhaps because he was nervous, he entered the courtroom with a serious expression.

Inflection

Antonyms

See also

References

  1. “堅・硬・固”, in 日本国語大辞典 (Nihon Kokugo Daijiten, “Nihon Kokugo Daijiten”)‎ (in Japanese), concise edition, Tōkyō: Shogakukan, 2000
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