'Unloosen' definitions:

Definition of 'unloosen'

From: WordNet
verb
Grant freedom to; free from confinement [syn: free, liberate, release, unloose, unloosen, loose] [ant: confine, detain]
verb
Loosen the ties of; "unloose your sneakers" [syn: unloose, unloosen]

Definition of 'Unloosen'

From: GCIDE
  • Unloosen \Un*loos"en\, v. t. [1st pref. un- (intensive) + loosen.] To loosen; to unloose. [1913 Webster]