lecherous

This term carries a heavy negative connotation, implying a predatory or creepy quality that goes beyond simple attraction. It suggests a lack of restraint and a disregard for the boundaries or comfort of others, often evoking an image of sleaziness or moral corruption. In modern usage, it is frequently employed to describe behavior that is unwelcome or harassing. While "lustful" can be neutral or even romantic in certain literary contexts, "lecherous" is almost exclusively used to condemn the subject's behavior as offensive or socially unacceptable.