11 letters · 16 points in Scrabble
adjective serving no useful purpose; having no excuse for being
adjective more than is needed, desired, or required
originFrom Middle English superfluous, from Latin superfluus (“superfluous”) + -ous, from superfluō (“overflow”), from super (“above, more than, over”) + fluō (“flow”). Compare mellifluous and fluid, also from Latin. Literally corresponds to overflow, which is from Germanic, rather than Latin.
Etymology from Wiktionary, CC BY-SA 3.0