Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
contumacious is an adjective meaning "wilfully obstinate; stubbornly disobedient". It carries one recorded sense.
wilfully obstinate; stubbornly disobedient
“a contumaceous witness is subject to punishment”
Definitions, synonyms and semantic relations for contumacious come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.