Definify.com
Webster 1913 Edition
Unsay
Un-say
,Verb.
T.
[1st pref.
un-
+ say
.] To recant or recall, as what has been said; to refract; to take back again; to make as if not said.
You can say and
unsay
things at pleasure. Goldsmith.
Webster 1828 Edition
Unsay
UNSA'Y
,Verb.
T.
Say and unsay, feign, flatter or abjure.