Entry 1 sense Webster, 1913 Degenerative /dĭj-ĕn'-ẽr-ət-ĭv/ · De·gen·er·a·tive · IPA /dɪˈdʒɛn(ə)ɹətɪv/ 01 a. Undergoing or producing degeneration; tending to degenerate. 1. Undergoing or producing degeneration; tending to degenerate.