Entry 1 sense Webster, 1913 Impartial /ĭmˌ-pär'-shəl/ · Im·par·tial · IPA /ɪmˈpɑɹ.ʃəl/ 01 a. Not partial; not favoring one more than another; treating all alike; unprejudiced; unbiased; disinterested; equitable; fair; just. 1. Not partial; not favoring one more than another; treating all alike; unprejudiced; unbiased; disinterested; equitable; fair; just. “Jove is impartial, and to both the same.” — Dryden. “A comprehensive and impartial view.” — Macaulay.