discreetness
- n knowing how to avoid embarrassment or distress
- n subtly skillful handling of a situation
discourtesy
- n an expression of lack of respect
- n a manner that is rude and insulting
- n a lack of politeness; a failure to show regard for others; wounding the feelings or others
discovered check
- n a check on the opponent's king that is delivered by moving a piece out of the line of attack by a queen or rook or bishop