adjective, un·wis·er, un·wis·est.

not wise; foolish; imprudent; lacking in good sense or judgment: an unwise choice; an unwise man.

Origin of unwise

before 900; Middle English; Old English unwīs. See un-1, wise1
Related formsun·wise·ly, adverbun·wise·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unwise

Contemporary Examples of unwise

Historical Examples of unwise

  • It is unwise to enter into war or friendship without seeing to the reserves.

    Roden's Corner

    Henry Seton Merriman

  • However, I realized that it was unwise to attempt the journey, and I must stay behind.

  • It would be unwise, indeed impossible for more than a few steps.


    Rafael Sabatini

  • Fools and unwise are they who choose not beauteous men to be their generals.

  • It is unwise, to say the least, to attempt to cover the social universe in one course.

    College Teaching

    Paul Klapper

British Dictionary definitions for unwise



lacking wisdom or prudence; foolish
Derived Formsunwisely, adverbunwiseness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for unwise

Old English unwis, from un- (1) "not" + wise (adj.). Cf. Middle Dutch onwijs, Old High German unwis, German unweise, Old Norse uviss, Gothic unweis.

Online Etymology Dictionary, © 2010 Douglas Harper