perennial(lasting or remaining active throughout the year, or all the time) adjective [UK: pə.ˈre.nɪəl] [US: pə.ˈre.niəl]
perpetual(continuing; uninterrupted) adjective [UK: pə.ˈpe.tʃʊəl] [US: pər.ˈpe.tʃuːəl]My father was perpetually drunk. = Mio padre era perennemente ubriaco.