Definition of impuissant in English:

impuissant

adjective

literary
  • Unable to take effective action; powerless.

    in danger, in peril, in jeopardy, at risk, endangered, unsafe, unprotected, ill-protected, unguarded
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Origin

Early 17th century: French, from im- not + puissant powerful.

Pronunciation:

impuissant

/ɪmˈpjuːɪs(ə)nt/