Definify.com
Webster 1913 Edition
Unloosen
Un-loos′en
,Verb.
 T.
 [1st pref. 
un- 
(intensive) + loosen
.] To loosen; to unloose. 
Definition 2025
unloosen
unloosen
English
Verb
unloosen (third-person singular simple present unloosens, present participle unloosening, simple past and past participle unloosened)