Meaning: revealing lack of perceptiveness or judgment or finesse; "an inept remark"; "it was tactless to bring up those disagreeable"
Meaning: lacking or showing a lack of what is fitting and considerate in dealing with others; "in the circumstances it was tactless to ask her age"
Mrs. Wyndham rarely said a tactless thing, but this evening she was in such good spirits that she said what came uppermost in her thoughts.
He skirted the school by a field path in case any of those narrow souls paid to employ so aimlessly the precious hours of his youth might be there. They would certainly be tactless enough to question him as he passed the door.