Definition of highly strung in English:

highly strung

Pronunciation /ˌhīlē ˈstrəNG/ /ˌhaɪli ˈstrəŋ/

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adjective

British
  • Very nervous and easily upset; high-strung.

    • ‘highly strung horses’
    nervous, excitable, temperamental, sensitive, unstable, brittle, easily upset, easily agitated, on edge, edgy, jumpy, keyed up, irritable, fidgety, restive, restless, anxious, overanxious, tense, taut, stressed, overwrought, neurotic
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