/ Dictionary / Index U uptight: Meaning and Definition of Find definitions for: up•tight Pronunciation: (up'tīt'), [key] — adj. Slang. tense, nervous, or jittery. annoyed or angry. stiffly conventional in manner or attitudes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: uptight (Thesaurus) uptick uptilt Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language