interrogative n. + Add to list UK //ɪntˈɛɹəɡətˌɪv// in·ter·rog·a·tive Archaic SynonymsAntonymsEtymology Synonyms interrogationinterrogatoryquestion Antonyms declarativedeclaratoryOriginLA-LATinterrogātīvus→ENinterrogative From Late Latin interrogātīvus, equivalent to interrogate + -ive.