13 letters · 16 points in Scrabble
adjective too numerous to be counted
originLearned borrowing from Latin multitūdin- (the oblique stem of multitūdō (“great number (of people), multitude”)) + English -ous (suffix forming adjectives from nouns, denoting the presence of a quality in any degree (typically an abundance)). Multitūdō is derived from multus (“many; much”) (ultimately from Proto-Indo-European *mel- (“to be late; to worry”)) + -tūdō (suffix forming abstract nouns…
Etymology from Wiktionary, CC BY-SA 3.0