Definition of ideologue noun from the Oxford Advanced Learner's Dictionary

 

ideologue

 noun
noun
BrE BrE//ˈaɪdiəlɒɡ//
 
; NAmE NAmE//ˈaɪdiəlɔːɡ//
 
, NAmE//ˈaɪdiəlɑːɡ//
 
; BrE BrE//ˈɪdiəlɒɡ//
 
; NAmE NAmE//ˈɪdiəlɔːɡ//
 
, NAmE//ˈɪdiəlɑːɡ//
 
(also ideologist
BrE BrE//ˌaɪdiˈɒlədʒɪst//
 
; NAmE NAmE//ˌaɪdiˈɑːlədʒɪst//
 
)
(formal, sometimes disapproving)
 
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a person whose actions are influenced by belief in a set of principles (= by an ideology ) Word Origin early 19th cent.: from French idéologue; see also ideology.
See the Oxford Advanced American Dictionary entry: ideologue