Definify.com
Webster 1913 Edition
Unsister
Un-sis′ter
,Verb.
T.
[1st pref.
un-
+ sister
.] To separate, as sisters; to disjoin.
[Poetic & R.]
Tennyson.
Definition 2024
unsister
unsister
English
Verb
unsister (third-person singular simple present unsisters, present participle unsistering, simple past and past participle unsistered)