12 letters · 15 points in Scrabble
noun someone who adopts the dress or manner or sexual role of the opposite sex
adjective receiving sexual gratification from wearing clothing of the opposite sex
originBorrowed from Latin trāns + vestītus, form of vestiō (“to clothe, to dress”) (as in English vestment, vest). Literally, a "cross-dresser". From transvestitism, from German Transvestitismus, coined in 1910 by Magnus Hirschfeld (the practice itself is much older).
Etymology from Wiktionary, CC BY-SA 3.0