A spiritually or intellectually enlightened person, or one claiming to be so; one initiated into ‘the mysteries’. archaic. Also spec. plural = illum…

A devotee of the intellect or understanding; Philosophy an adherent of intellectualism (intellectualism, n. 2).

An embodiment of intelligence or understanding; a highly intelligent person.

An intellectual being; a person of superior or supposedly superior intellect; spec. (a) a highly intelligent person who pursues academic interests…

An excessively bookish or intellectual person. Obsolete.

In extended use: intellect embodied; spec. †(a) a being or spirit possessing understanding (obsolete); (b) a person of (usually great)…

In extended use: an embodiment of intellectual ability; an (apparently) intellectual person.

one who holds this theory; also, an intellectual, intellectualist.

Originally U.S. A highly intellectual or cultured person; a person with sophisticated taste.

slang (originally U.S.) Frequently derogatory. A person of a type regarded as characteristically having… An intellectual, aesthete, or artist; spec.…

An intellectual, a ‘highbrow’. Also attributive.

British colloquial. In weakened use: an intellectual, an academic, a clever person; an expert in a particular field; esp. such a person perceived…

= boffin, n.