Entry 3 senses · 2 variants Webster, 1913 Collectivist · Col·lect·iv·ist · IPA /kəˈlɛktɪvɪst/ n. a. 01 n. An advocate of collectivism. 1. An advocate of collectivism. 02 a. Relating to, characteristic of, or advocating, collectivism. 1. Relating to, characteristic of, or advocating, collectivism. 2. operating under collectivist principles. Syn. collectivized, state-controlled.