Pronunciation: (un-strung'), [key]
pt. and pp. of unstring.
1. having the string or strings loosened or removed, as a bow or harp.
2. weakened or nervously unhinged, as a person or a person's nerves; unnerved; discomposed: The incident left him unstrung.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.