Entry 2 senses · 2 variants Webster, 1913 expressionist · IPA /ɪksprˈɛʃənəst/ adj. n. 01 adj. of or pertaining to expressionism (definition 2); as, expressionist art. 1. of or pertaining to expressionism (definition 2); as, expressionist art. 02 n. an artist who is an adherent of expressionism. 1. an artist who is an adherent of expressionism.