of, relating to, or characteristic of an imbecile.
contemptibly stupid, silly, or inappropriate: an imbecilic suggestion.

Origin of imbecilic

First recorded in 1915–20; imbecile + -ic

Synonyms for imbecilic Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for imbecilic

Contemporary Examples of imbecilic

  • Again and again soldiers are referred to as animals, as cretins turned lunatic by such "senseless, imbecilic violence."

    The Daily Beast logo
    A Great Antiwar Novel

    William Giraldi

    June 30, 2011

Historical Examples of imbecilic

  • The intricate and imbecilic steps of the day he performed in flawless sequence.


    Edna Ferber

  • He, Hunter, was the one who deserved execution for ever entrusting anything so important as the message to an imbecilic animal.

  • Moral strife, as well as legal penalties, would bear all the stigmata of unmitigated, imbecilic cruelty.

    The Philosophy of Spinoza

    Baruch de Spinoza

  • If stimulated by association with girls, he makes crude and imbecilic plans for conquest.

    The Criminal Imbecile

    Henry Herbert Goddard

  • It needs no argument to show that all the rest of his conduct in leaving things as he did was imbecilic.

    The Criminal Imbecile

    Henry Herbert Goddard

Word Origin and History for imbecilic

1875, from imbecile + -ic.

Online Etymology Dictionary, © 2010 Douglas Harper