'High-strung' definitions:

Definition of 'high-strung'

(from WordNet)
adjective
Being in a tense state [syn: edgy, high-strung, highly strung, jittery, jumpy, nervy, overstrung, restive, uptight]

Definition of 'High-strung'

From: GCIDE
  • High-strung \High"-strung`\, a. Strung to a high pitch; spirited; sensitive; as, a high-strung horse. [1913 Webster]