ῥυπαίνω

A. ἐρρυπάνθην Plu. 2.434b: (ῥύπος):—defile, disfigure, ῥ. τὸ μακάριον Arist. EN 1099b2; τὸν ἐμὸν βίον Aristaenet. 2.17; abuse, disparage, Pherecr. 228, Arist. Rh. 1405a25:—Pass., to be or become foul, opp. λαμπρύνεσθαι, X. Lac. 11.3, cf. Apoc. 22.11; of a garment, get dirty, Thphr. Char. 10.14.

2. metaph., contaminate, infect, τοὺς πλησιάζοντας Gal. 1.254.