communistPronunciation: /ˈkɒmjʊnɪst/Translate communist | into French | into Spanish Definition of communist noun a person who supports or believes in the principles of communism:I was very left-wing but I was never a communist adjective adhering to or based on the principles of communism:a French communist writerDerivatives communistic adjective communist in other Oxford dictionaries Definition of communist in the US English dictionary