lecher (n.)

• backslider
• degenerate
• goat
• heartbreaker
• libertine
• masher
• miscreant
• pervert
• philanderer
• pimp
• profligate
• recidivist
• recreant
• reprobate
• satyr
• scapegrace
• seducer
• trollop
• whore
• whoremaster
• whoremonger
• wolf