Top Definition
One who has no discernable sexual preference whatsoever. Generally, nihlosexuals are virgins, have not masturbated or will not reveal it, and show no sexual or romantic interest in any human of any sex, animal, plant, or mineral.
"I think Jeff's gay." "No dude, he's just a nihlosexual. He just doesn't care."
by Weiler November 20, 2004

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