1530, "to recount, tell," from Latin relatus, used as past participle of referre (see refer), from re- "back, again" + latus (see oblate (n.)). Meaning "to establish a relation between" is from 1771. Sense of "to feel connected or sympathetic to" is attested from 1950, originally in psychology jargon. Related: Related; relating. Related in the sense of "connected by blood or marriage" is from 1702.