1. 〔無思慮〕(an) indiscretion, imprudence;〔無思慮な行い〕misconduct

    不心得な indiscreet, imprudent

    • 不心得にもカンニングをした
    • He was so misguided as to cheat on [in] an examination.
    • 不心得にもほどがある
    • You carry your misconduct too far.
  1. 不心得者an imprudent [indiscreet] person; a misguided [misdirected] person