up tight up tight or uptight {adj.}, {slang}, {informal} Worried, irritated, excessively eager or anxious. Why are you so uptight about getting that job? The more you worry, the less you'll succeed. Categories: add yours {adj.} {informal} {slang} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: U Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Comment on this entry