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