Word of the Day:

July 2, 2026

sagacious

adjective suh-GAY-shus

What it Means

Someone or something described as sagacious has or shows an ability to understand difficult ideas and situations and to make good decisions. Sagacious may be considered a formal synonym of wise and discerning.

// Student reviews paint the writing professor as a sagacious mentor and a compassionate teacher.

See the entry

Sagacious in Context

“It’s a lyrical truism with the kind of wisdom that feels particularly sagacious only within the context of pop music: Of course breaking up is hard to do, but when expressed by [Neil] Sedaka at the end of each verse (and the beginning of each bridge) of his pained plea to his partner to ‘give our love another try,’ it feels like hard-earned insight.” — Andrew Unterberger, Billboard, 2 Mar. 2026

More example sentences

Did You Know?

You might expect, wise word wonk that you are, that the word sagacious is etymologically linked with sage, which, as an adjective, means “wise” or, as a noun, “a wise person.” However, despite similarities of spelling, sound, and sense, the two words are not closely related. Sagacious comes from sagire, a Latin verb meaning “to perceive keenly,” while sage comes from a different Latin verb, sapere, which means “to taste,” “to have good taste,” or “to be wise.” Sagacious entered the English language around the beginning of the 17th century and, for some decades, referred to perceptiveness of sight, taste, and especially, smell, hewing close to its Latin ancestor. It has largely lost the sense (no pun intended) of sensory keenness, and now almost exclusively describes someone or something displaying keen, discerning judgment.