(1):

(a.) Wanting warmth, fervor, ardor, fire, vivacity, etc.; unfeeling; forbidding in manner; dull and unanimated; stiff and formal; as, a frigid constitution; a frigid style; a frigid look or manner; frigid obedience or service.

(2):

(a.) Cold; wanting heat or warmth; of low temperature; as, a frigid climate.

(3):

(a.) Wanting natural heat or vigor sufficient to excite the generative power; impotent.