adjectivepĕr-ingrātusPER-INGRATVS☆ KeepMeaningvery ungratefulLewis & Short 1879ModernAs printed, 1879PERINGRATUSLEWIS & SHORTPERINGRATUSpĕr-ingrātus, a, um, adj., I. very ungrateful (post-Aug.), Sen. Ep. 98, 11.Read the whole entry