Origin: Latin suffix -able
Unobjectionable has 4 different meanings across 1 category:
(of behavior or especially language) free from objectionable elements; fit for all observers
"good clean fun"
"a clean joke"
not causing disapproval
"it was an innocuous remark"
"confined himself to innocuous generalities"
"unobjectionable behavior"
not objectionable
"the ends are unobjectionable; it's the means that one can't accept"
Not objectionable; not causing any objection.