lewd
/l(j)uːd/

adjective
crude and offensive in a sexual way.

"she began to gyrate to the music and sing a lewd song"

synonyms: vulgar, crude, smutty, dirty, filthy, obscene, pornographic, coarse, tasteless, indecorous, indelicate, off colour, unseemly, indecent, salacious, gross, disgusting, sordid, low, foul, vile;