/ Dictionary / Index U useless: Meaning and Definition of Find definitions for: use•less Pronunciation: (ys'lis), [key] — adj. of no use; not serving the purpose or any purpose; unavailing or futile: It is useless to reason with him. without useful qualities; of no practical good: a useless person; a useless gadget. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: useless (Thesaurus) use immunity Usenet Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language