Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
opinionative is an adjective meaning "obstinate in your opinions". It carries one recorded sense.
obstinate in your opinions
Definitions, synonyms and semantic relations for opinionative come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.