Definitions

1. adjective

having or showing excessive or strained emotion; tense or irritable

“After the argument, she was overstrung and needed some time to calm down.”

2. adjective

overly or excessively anxious or tense

“The overstrung parents were constantly worrying about their child’s safety.”

3. noun

a string stretched too tightly

“The overstrung harp string broke with a loud crack.”