Synonyms of the word

perspicacious

• adj. (figuratively) Of acute discernment; having keen insight; mentally perceptive.
• adj. (obsolete) Able to physically see clearly; quick-sighted; sharp-sighted.

clear-eyed

• adj. Having clear, sharp sight.
• adj. Mentally acute and perspicacious.

clear-sighted

• adj. Having sharp vision.
• adj. Acutely perceptive or discerning; perspicacious.

discerning

• v. present participle of discern.
• adj. Of keen insight or good judgement; perceptive.
• n. discernment.

sagacious

• adj. Having or showing keen discernment, sound judgment, and farsightedness; mentally shrewd.

sapient

• adj. Attempting to appear wise or discerning.
• adj. (dated) Possessing wisdom and discernment; wise, learned.
• adj. (chiefly science fiction) Of a species or life-form, possessing intelligence or self-awareness.
• n. (chiefly science fiction) An intelligent, self-aware being.

wise

• adj. Showing good judgement or the benefit of experience.
• adj. (colloquial) Disrespectful.
• v. To become wise.
• v. (ergative, slang) Usually with "up", to inform or learn.
• n. (archaic) Way, manner, method.
• v. (dialectal) to instruct.
• v. (dialectal) to advise; induce.
• v. (dialectal) to show the way, guide.
• v. (dialectal) to direct the course of, pilot.
• v. (dialectal) to cause to turn.