The definition of lascivious is someone who expresses lust or lewdness.(adjective)
An example of something that would be described as lascivious is the leering look that a creepy old man gives young girls at a bar.
See lascivious in Webster's New World College Dictionary
Origin: ME lascyuyous < ML lasciviosus < LL < L lascivia, wantonness < lascivus: see lust
See lascivious in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Late Latin lascīviōsus
Origin: , from Latin lascīvia, lewdness, playfulness
Origin: , from lascīvus, lustful, playful; see las- in Indo-European roots.
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