🇬🇧 en ja 🇯🇵

lack noun

  /læk/
  • A deficiency or need (of something desirable or necessary); an absence, want.
不足, 欠乏

lack verb

  /læk/
  • (transitive, stative) To be without, not to have, to need, to require.
欠く, 欠ける

lacking adjective

  /ˈlækɪŋ/
  • Missing or not having enough of (a good quality, etc).
いまいち
Wiktionary Links