Etymology
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relationship (n.)

1640s, "sense or state of being related" by kindred, affinity, or other alliance, from relation + -ship. Specifically of romantic or sexual intimacy by 1944.

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sexual (adj.)

1650s, "distinctive of either sex, of or pertaining to the fact of being male or female," from Late Latin sexualis "relating to sex," from Latin sexus "a sex, state of being either male or female, gender" (see sex (n.)).

The meaning "pertaining to copulation or generation" is from 1766, on the notion of "done by means of the two sexes;" hence also "pertaining to erotic appetites and their gratification" and "peculiar to or affecting the organs of sex, venereal" (1799). The phrase sexual intercourse is attested by 1771 (see intercourse), sexual orientation by 1967, sexual harassment by 1975. Sexual revolution is attested by 1962. Sexual politics is from 1970. Related: Sexually.

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interrelationship (n.)

also inter-relationship, "state of being interrelated," 1841, from inter- "between" + relationship.

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venereal (adj.)

early 15c., "of or pertaining to sexual desire or intercourse," from Latin venereus, venerius "of Venus; of sexual love," from venus (genitive veneris) "sexual love, sexual desire" (from PIE root *wen- (1) "to desire, strive for"). Used of sexually transmitted diseases from 1650s. Related: Venereally.

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Hindi (adj.)

1825, from Hind "India" (see Hindu) + -i, suffix expressing relationship. As the name of a modern language of India, 1880.

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venery (n.1)

"pursuit of sexual pleasure," mid-15c., from Medieval Latin veneria "sexual intercourse," from Latin venus (genitive veneris) "sexual love, sexual desire" (from PIE root *wen- (1) "to desire, strive for"). In earlier use it may have been felt as a play on now obsolete homonym venery (n.2) "practice or sport of hunting, the chase." Related: Venereous.

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kinship (n.)

by 1764, from kin + -ship. Relationship covers the same sense but is a hybrid.

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sexualize (v.)

also sexualise, 1839, "confer a sexual distinction upon" (a thing, idea, etc.), from sexual + -ize. Related: Sexualized; sexualizing.

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anaphrodisiac (adj.)

"diminishing the sexual appetite," 1823, from Greek anaphroditos "without sexual desire," or from an- (1) "not, without" + aphrodisiac. Related: Anaphrodisia; anaphroditic; anaphroditous.

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psychosexual (adj.)

also psycho-sexual, "involving the mental and emotional aspects of sexuality," 1891, from psycho- + sexual. Related: Psychosexually.

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