1. having or characterized by many transient sexual relationships."she's a wild, promiscuous, good-time girl"synonyms:licentious, sexually indiscriminate, immoral, unchaste, debauched, dissolute, dissipated, profligate, of easy virtue, fast; Morelibertine, wanton, abandoned, unrestrained, uncontrolled, incontinent; informaleasy, swinging; informalroundheeled; informalslack; informalsluttish, whorish, tarty, slaggy; datedloose, fallen; archaiclight; rareriggish "despite what you seem to think, I have never been promiscuous"antonyms:chaste, moral, pure
2. demonstrating or implying an unselective approach; indiscriminate or casual."the city fathers were promiscuous with their honours"synonyms:indiscriminate, undiscriminating, unselective, random, irresponsible, haphazard, thoughtless, unthinking, unconsidered, casual, careless More"the promiscuous popping of antibiotics hasn't helped his T-cell count"antonyms:careful, selectiveconsisting of a wide range of different things."Americans are free to choose from a promiscuous array of values"