Of the mind or mental faculties: normal, natural, sound; such that one can think and act competently. Chiefly in to be in one's right mind (also sen…

Of a person: of sound mind, sane; (of the mental faculties) free from impairment, sound. Cf. of whole memory at memory, n. phrases 3a. Now rare.

With reference to a person's (or occasionally animal's) physical, psychological, or mental condition. Of a person's mind or mental faculties: in a…

Of the mind, heart, etc., with reference to intellectual or moral qualities.

figurative. Characterized by stability or equilibrium; (of temperament or disposition) stable, constant. Also: that brings about stability. Obsolete.

Clever, intelligent; quick to learn. Also (in later use): of sound mind.

Not obscured; clearly visible.

Of the mind: Sane, strong. rare.