perspicacious implies unusual power to see through and understand what is puzzling or hidden.

PERSPICACIOUS definition: having keen mental perception and understanding; discerning. See examples of perspicacious used in a sentence.

PERSPICACIOUS definition: 1. quick in noticing, understanding, or judging things accurately: 2. quick in noticing…. Learn more.

perspicacious (ˌpɜːspɪˈkeɪʃəs) adj 1. acutely perceptive or discerning 2. archaic having keen eyesight

Definition of perspicacious adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Dec 11, 2025 · Adjective perspicacious (comparative more perspicacious, superlative most perspicacious) (figuratively) Of acute discernment; having keen insight; mentally perceptive.

The adjective perspicacious is a long word for a short definition: "keen" or "shrewd." This word is descended from the Latin word perspicere, which means "to look closely." In other words, if you look …

There are three meanings listed in OED's entry for the adjective perspicacious, one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

Perspicacious definition: Having or showing penetrating mental discernment; clear-sighted.

PERSPICACIOUS meaning: having or showing an ability to notice and understand things that are difficult or not obvious