In violation of good taste even verging on the indecent:
— An indelicate remark.

synoniemen: off-color, off-colour.

Lacking propriety and good taste in manners and conduct.

synoniem: indecorous.

Roget 961: impure; unclean etc. (dirty) 653; not to be mentioned to ears polite; immodest, shameless; indecorous, indelicate, indecent; Fescennine; loose, risque [Fr.], coarse, gross, broad, free, equivocal, smutty, fulsome, ribald, obscene, bawdy, pornographic.    concupiscent, prurient, lickerish^†, rampant, lustful; carnal, carnal-minded; lewd, lascivious, lecherous, libidinous, erotic, ruttish, salacious; Paphian; voluptuous; goatish, must, musty.    unchaste, light, wanton, licentious, debauched, dissolute; of loose character, of easy virtue; frail, gay, riggish^†, incontinent, meretricious, rakish, gallant, dissipated; no better than she should be; on the town, on the streets, on the pave, on the loose.    adulterous, incestuous, bestial.    ... meer laten zien

Verging on the indecent.