Lecherously is an adverb that refers to behaviors or actions that are deemed to be sexually or lustfully driven. However, there are several other synonyms that can be used instead of lecherously, including lasciviously, lewdly, salaciously, licentiously, indecently, and wantonly. These words all have the same connotation of someone or something acting in a sexually suggestive manner. Other synonyms that can be used depending on the context include temptingly, alluringly, and seductively. All of these words have slightly different nuances, but they all capture the same essence of lechery and desire.