in·tro·spec·tion·ist I. \-sh(ə)nə̇st\noun (-s) 1.: one especially given to introspection 2.: an adherent of introspectionism II. adjective orin·tro·spec·tion·is·tic\| ̷ ̷ ̷ ̷ˌ ̷ ̷shə|nistik\ : of or relating to introspectionism < a special introspectionist technique was devised — Ethel Albert >