What is the Latin word for foolishly?

The usual Latin words for “foolishly” are stultus, stolidus, dēmentō; also ineptus, imprūdēns, īnsipiēns. The right choice depends on the sense; see the distinctions below.

English → Latin

“foolishly” in Latin

stultusfoolish, fatuous, stupid, ill-considered stolidusstupid, foolish dēmentōto make mad or crazy, drive crazy; to bewitch; to delude ineptusunsuitable; impertinent, improper, tasteless; senseless, silly imprūdēnsignorant of; unaware; inadvertent, imprudent īnsipiēnsfoolish, unwise, without intelligence, senseless; or used as a substantive adjective: a fool, etc.

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

foolishly

stulte: stolide: dementer: inepte: imprudenter: insipienter. [SYN. in FOOLISH.] To believe anything foolishly, aliquid stolide or dementer credere.

Quick answer

What is the Latin word for foolishly?: The usual Latin words for “foolishly” are stultus, stolidus, dēmentō; also ineptus, imprūdēns, īnsipiēns. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.