tact·less 
/ˈtæktləs/ adjective
/ˈtæktləs/ adjective [more tactless; most tactless] : tending to offend or upset people : not showing or having tact
▪ a tactless question/comment ▪ a rude, tactless man
▪ a tactless question/comment ▪ a rude, tactless man
— tact·less·ly adverb
▪ He tactlessly asked her how old she was.
▪ He tactlessly asked her how old she was.
— tact·less·ness noun [noncount]
