the ability to relate seemingly disparate things so as to illuminate or amuse. a talent for banter or persiflage. a witty utterance or exchange. clever or apt humor. astuteness of perception or judgment: ACUMEN. a person of superior intellect: THINKER. an imaginatively perceptive and articulate individual especially skilled in banter or persiflage. reasoning power: INTELLIGENCE. MIND, MEMORY. SENSE sense 2a —usually used in plural. mental soundness: SANITY —usually used in plural. mental capability and resourcefulness: INGENUITY. KNOW. to come to know: LEARN.