Lecher
Lecher , noun
[Old English lechur, lechour, Old French lecheor, lecheur, gormand, glutton, libertine, parasite, from lechier to lick, French lécher; of Teutonic origin. See Lick.]
A man given to lewdness; one addicted, in an excessive degree, to the indulgence of sexual desire, or to illicit sexual relations with women; also called letch and lech.
Lecher , intransitive verb
To practice lewdness.