Here's what rhymes with promiscuous.

Consider these alternatives

flirtatious / basis immoral / moral promiscuity / continuity manipulative / native antisocial / social unfaithful / faithful dissolute / group intercourse / course hedonistic / characteristic amoral / moral seduced / produced submissive / wishes narcissistic / characteristic conniving / driving behaviour / saviour uncouth / truth sociopathic / idiopathic vivacious / basis