adj. 1. Given to or expressing lust; lecherous. 2. Exciting sexual desires; salacious. [Middle English, from Late Latin lascīviōsus, from Latin lascīvia, lewdness, playfulness, from lascīvus, lustful, playful; see las- in the Appendix of Indo-European roots.] las·civi·ous·ly adv. las·civi·ous·ness n. |
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