high-strung . high-strung {adj.} Nervous; sensitive; tense. Gary has been rather high-strung lately because of too much work at the office. Categories: add yours {adj.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: H Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Leave my opinion