tactful
Definitions
Having or showing a sense of what is fitting and considerate in dealing with others.
Skillful in handling difficult or delicate situations without giving offense.
Examples
She was very tactful when she explained to her colleague why his proposal would not work.
It requires a tactful approach to deliver negative feedback without hurting someone's feelings.
Synonyms
diplomatic discreet polite considerate thoughtful judicious sensitive
Antonyms
tactless blunt insensitive rude impolite thoughtless indiscreet