(a.) Not delicate; wanting delicacy; offensive to good manners, or to purity of mind; coarse; rude; as, an indelicate word or suggestion; indelicate behavior.

callow chintzy crude improper in bad taste inappropriate indecent indecorous indiscreet inelegant lewd malodorous offensive rough rude tasteless unbecoming unbeseeming uncouth undecorous undignified unfitting ungenteel ungodly unseemly unsuitable untasteful untoward vulgar wanton