: not having or showing tact : not tactful untactful remarks.

What does a tactful person do?

If you are tactful, you have a knack for saying the right thing at the right time. A tactful person is appropriate and sensitive, never rude or careless. ... But even when tactful people have to give criticism, they do it in such a way that the other person doesn't get offended.

What is a tactless comment?

adjective. If you describe someone as tactless, you think what they say or do is likely to offend other people. He had alienated many people with his tactless remarks.