lasciviously

/ləˈsɪviəsli/
adverb
  1. In a way that shows strong sexual desire, often in a crude or offensive manner.
    • She was offended when he winked lasciviously at her.
    • The character in the novel grinned lasciviously at the newcomer.
    • He stared lasciviously at the dancers on stage.
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