tactless
Definitions
Having or showing a lack of adroitness and sensitivity in dealing with others or with difficult issues.
Showing a lack of skill or judgment in maintaining good relations and avoiding offense.
Examples
It was incredibly tactless of him to mention her ex-boyfriend during the wedding dinner.
She made a tactless remark about his weight, leaving the entire room in an awkward silence.
Synonyms
insensitive thoughtless blunt impolite undiplomatic rude indiscreet
Antonyms
tactful diplomatic thoughtful discreet polite sensitive considerate