unparliamentary Syllabification: (un·par·lia·men·ta·ry)Pronunciation: /ˌənˌpärləˈmentərē/Definition of unparliamentary adjective (especially of language) contrary to the rules or procedures of a parliament:an unparliamentary expressionunparliamentary in other Oxford dictionaries Definition of unparliamentary in the British & World English dictionary