Definitions

1. adjective

out of tune; having lost the normal tension of a string

“The musician’s instrument was unstrung after being left out in the rain.”

2. verb

to remove the strings from (a musical instrument)

“The repairman had to unstring the guitar before he could replace the damaged strings.”

3. verb

to deprive of confidence or composure

“The news unstrung her, and she was left shaken.”