ideologuePronunciation: /ˈʌɪdɪəlɒg, ˈɪd-/Definition of ideologue noun an adherent of an ideology, especially one who is uncompromising and dogmatic:a right-wing ideologueOrigin: early 19th century: from French idéologue; see also ideologyideologue in other Oxford dictionaries Definition of ideologue in the US English dictionary