Antonyms of adj objectionable

2 senses of objectionable

Sense 1
objectionable, obnoxious -- (causing disapproval or protest; "a vulgar and objectionable person")

INDIRECT (VIA offensive) -> inoffensive -- (giving no offense; "a quiet inoffensive man"; "a refreshing inoffensive stimulant")

Sense 2
exceptionable, objectionable -- (liable to objection or debate; used of something one might take exception to; "a thoroughly unpleasant highly exceptionable piece of writing"; "found the politician's views objectionable")

INDIRECT (VIA unacceptable) -> acceptable -- (worthy of acceptance or satisfactory; "acceptable levels of radiation"; "performances varied from acceptable to excellent")

Similarity of adj objectionable

2 senses of objectionable

Sense 1
objectionable, obnoxious -- (causing disapproval or protest; "a vulgar and objectionable person")
       => offensive (vs. inoffensive) -- (unpleasant or disgusting especially to the senses; "offensive odors")

Sense 2
exceptionable, objectionable -- (liable to objection or debate; used of something one might take exception to; "a thoroughly unpleasant highly exceptionable piece of writing"; "found the politician's views objectionable")
       => unacceptable (vs. acceptable) -- (not acceptable; not welcome; "a word unacceptable in polite society"; "an unacceptable violation of personal freedom")