JMdict: 1000730

いけない 【いけない】

  1. [exp,adj-i] bad; wrong; naughty
  2. [exp,adj-i] must not (do, be); should not; ought not to
  3. [exp,adj-i] useless; no good; bad
  4. [exp,adj-i] hopeless; beyond hope
  5. [exp,adj-i] unfortunate; a shame; a pity
  6. [exp,adj-i] unable to drink (alcohol)
  7. [exp,adj-i] so as not to ...; so that ... (won't); in case ...; for fear that ...; lest ...
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Words often seen with this one: (experimental feature)

こと (602),  (296), この (203),  (169), それ (164), いい (164), なんで (156), そんな (145), こんな (145),  (132), その (121), それは (120), もう (116), という (115), まで (104), 自分 (98), これから (89),  (88), 絶対に (81), もの (80),  (78), 先生 (76),  (76), 人間 (73), また (72)