Synonyms and related words :
Vernunft, acuity, acuteness, adroitness, aptitude, aptness, brain, braininess, brains, brightness, brilliance, clear thinking, cleverness, conception, dexterity, discourse of reason, discursive reason, esprit, flair, genius, giftedness, gifts, gray matter, head, headpiece, intellect, intellection, intellectual faculty, intelligence, keen-wittedness, keenness, mens, mental alertness, mental capacity, mentality, mercurial mind, mind, native cleverness, nimble mind, nimble-wittedness, nimbleness, nous, power of reason, psyche, quick parts, quick thinking, quick wit, quick-wittedness, quickness, ratio, rationality, ready wit, reason, reasoning, reasoning faculty, savvy, sharp-wittedness, sharpness, smartness, sprightly wit, talent, understanding