lecherous
Concise Oxford English Dictionary © 2008 Oxford University Press:
lecherous/ˈletʃərəs/
▶adjective having or showing excessive or offensive sexual desire.
– derivatives
lecherously adverb,
lecherousness noun.
lecherously adverb,
lecherousness noun.
– origin ME: from OFr. lecheros, from lecheor, from lechier ‘live in debauchery or gluttony’, ult. of W. Gmc origin and rel. to lick.
'lecherous' also found in these Oxford entries:

