11 letters · 14 points in Scrabble
originA blend of French (point d')interrogation (“question mark”) or the equivalent term in another Romance language + bang (“exclamation mark, exclamation point”), coined in a 1962 article in the journal TYPEtalks by American advertising executive Martin Kiehra Speckter (1915–1988), who invented the symbol.
Etymology from Wiktionary, CC BY-SA 3.0