unimˈpugned,ppl.a. (un-1 8.) [1775Ash.]1838James Louis XIV, I. 247 That all the arbitrary acts of his predecessor..should remain as unimpugned precedents in case of necessity.a1857R. A. Vaughan Ess. & Rem. (1858) I. 37 Thus did Origen..attempt to retain the justice of God unimpugned.