having or showing acute mental discernment and keen practical sense; shrewd: a sagacious lawyer.
Obsolete. keen of scent.

Origin of sagacious

First recorded in 1600–10; sagaci(ty) + -ous
Related formssa·ga·cious·ly, adverbsa·ga·cious·ness, nounqua·si-sa·ga·cious, adjectivequa·si-sa·ga·cious·ly, adverbsu·per·sa·ga·cious, adjectivesu·per·sa·ga·cious·ly, adverbsu·per·sa·ga·cious·ness, nounun·sa·ga·cious, adjectiveun·sa·ga·cious·ly, adverbun·sa·ga·cious·ness, noun

Synonyms for sagacious

Antonyms for sagacious

1. unwise. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for unsagacious



having or showing sagacity; wise
obsolete (of hounds) having an acute sense of smell
Derived Formssagaciously, adverbsagaciousness, noun

Word Origin for sagacious

C17: from Latin sagāx, from sāgīre to be astute
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 unsagacious



c.1600, from Latin sagacem (nominative sagax) "of quick perception;" see sagacity. Related: Sagaciously.

Online Etymology Dictionary, © 2010 Douglas Harper