Inconsiderate and Rudeness => destroys reputation and relationships and causes offence and create enemies
Sensitive to understand other people's feelings, opinions, beliefs and ideas.
Knowing what to say and how to say it; how to avoid bad feelings
Tact is the art of making a point without making an enemy (Isaac Newton).
The ability to assert your ideas or opinions, knowing what to say and how to say it without damaging the relationship by causing offence.