unstring

• POS: Verb (usu participle)
• HYPHEN: un=string

CIDE DICTIONARY

unstring, v. t. [1st pref. un- + string.].

•  To deprive of a string or strings; also, to take from a string; as, to unstring beads.  [1913 Webster]
•  To loosen the string or strings of; as, to unstring a harp or a bow.  [1913 Webster]
•  To relax the tension of; to loosen.  [1913 Webster]

OXFORD DICTIONARY

unstring, v.tr. (past and past part. unstrung)
1 remove or relax the string or strings of (a bow, harp, etc.).
2 remove from a string.
3 (esp. as unstrung adj.) unnerve.