What is "untactful"

Usage examples of "untactful".

He groped for a tactful description, and Skan supplied him with an untactful one.

She had been about to ask when he had last left the base for any reason, but that seemed too untactful, even under the current circumstances.

I have been untactful and unkind, but I wished to make this contact before your arrival was widely known.

No matter what had passed between himself and Ned, he felt confident no one at the farm would be so untactful as to mention Sile to his fiancee.