GREASY is validvalid

containing or resembling grease [adj GREASIER, GREASIEST] : GREASILY [adv], GREASINESS [n]

21,071 of 196,601 in NWL2023·also valid in CSW24

containing or resembling grease [adj GREASIER, GREASIEST, GREASILY] / (Australian slang) a sheepshearer; a camp-cook in the outback [n GREASIES]