9 letters · 18 points in Scrabble
noun a person who participates in (or is open to) sexual activities of many kinds
originFrom pan- + -sexual. First attested in 1926 (with pansexualism attested since 1917), as a descriptor of the psychological theory that all human activity is based on sexuality. Used to describe a sexual orientation since at least the 1970s.
Etymology from Wiktionary, CC BY-SA 3.0