unproˈnounceable,a. (un-1 7 b.) 1831Scott Ct.Rob. ii, Foreigners bearing unpronounceable names.1863M. E. Braddon Aurora Floyd xviii, Hock, the name of which was in fourteen unpronounceable syllables.1889Doyle Micah Clarke xviii, A score of unpronounceable fights in the Styrian Alps.