FIFTY

noun (plural fifties) Etymology: Middle English, from ~, adjective, from Old English fīftig, from fīftig, noun, group of 50, from fīf five + -tig group of ten; akin to tīen ten Date: before 12th century see: number the numbers 50 to 59, a 50-dollar bill, fiftieth adjective or noun ~ adjective ~ pronoun, plural in construction ~ish adjective