A lascivious one is someone who is characterized by lustful or lecherous behavior. The term can be used to describe both men and women. Two crossword solutions for this term are SATYR (5 letters) and leerer (6 letters). A SATYR is a mythological creature with the upper body of a human and the lower body of a goat, often associated with wild and lascivious behavior. A leerer is someone who looks at someone else in a lewd or suggestive manner.