Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
unobjectionable is an adjective meaning "(of behavior or especially language) free from objectionable elements; fit for all observers". It carries 3 recorded senses.
(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”
Definitions, synonyms and semantic relations for unobjectionable come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.