Entry 1 sense Webster, 1913 Traditionalist /trəd-ĭsh'-ən-əl-ĭst/ · Tra·di·tion·al·ist · IPA /trədˈɪʃənəlɪst/ 01 n. An advocate of, or believer in, traditionalism; a traditionist. 1. An advocate of, or believer in, traditionalism; a traditionist.