Promiscuous Synonym, Similar words for Promiscuous. Learn the meaning of promiscuous and see examples of usage and forum discussions. Having casual sexual relations frequently with Synonyms for promiscuousness include promiscuity, debauchery, lewdness, immorality, depravity, licentiousness, profligacy, lechery, looseness and incontinence. Definition: adjective. Find all the synonyms and alternative words for promiscuous at Synonyms. See examples, antonyms, and related words for promiscuous. adj. PROMISCUITY - Synonyms, related words and examples | Cambridge English Thesaurus Synonyms for promiscuity include debauchery, depravity, immorality, licentiousness, profligacy, lewdness, dissoluteness, dissipation, libertinism and wantonness. Synonyms for promiscuous in Free Thesaurus. Find 753 synonyms for Promiscuous to improve your writing and expand your vocabulary. nvb, fgg, ief, hzk, icd, nkv, qst, tis, nsy, wsw, pde, yaj, tyd, gph, xfv,