lecherous
adjective
a lecherous old man:
lustful, licentious, lascivious, libidinous, prurient, lewd, salacious, lubricious, debauched, dissolute, wanton, loose, fast, impure, unchaste, intemperate, dissipated, degenerate, sinful, depraved, crude, goatish;
sensual, libertine, promiscuous, carnal;
dirty, filthy, perverted, coarse, corrupt, indecent;
informal randy, horny, raunchy, pervy, naughty;
rare concupiscent, lickerish.
▷antonyms chaste, pure.