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use noun

  /jus/ , /juz/ , /juːs/ , /juːz/ , /jɪu̯s/ , /jɪu̯z/ , /jʉːs/ , /jʉːz/
  • The act of using.
利用, 使用
  • A function; a purpose for which something may be employed.
使い道, 用途
  • (uncountable, followed by "of") Usefulness, benefit.
効用,

useful adjective

  /ˈjusfəl/ , /ˈjuːsfəl/ , /ˈjʉːːsfəl/ , [ˈjusfl̩] , [ˈjuːsfl̩] , [ˈjʉːːsfl̩]
  • Having a practical or beneficial use.
有用, 便利, 役に立つ

used adjective

  /just/ , /juzd/ , /juːst/ , /juːzd/
  • That has or have previously been owned by someone else.
中古

use verb

  /jus/ , /juz/ , /juːs/ , /juːz/ , /jɪu̯s/ , /jɪu̯z/ , /jʉːs/ , /jʉːz/
  • (transitive) To employ; to apply; to utilize.
使う, 用いる, 使用する
  • (dated) To behave toward; to act with regard to; to treat.
使い尽くす

us pronoun

  /əs/ , /əz/ , /ʌs/ , /ʌz/
  • (personal) Me and at least one other person; the objective case of we.
私達

usefulness noun

  /ˈjuːsfəlnəs/
  • The quality or degree of being useful.
有用性
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