The antonyms for the word "without diplomacy" are many, including words like tact, diplomacy, subtlety, finesse, courtesy, and politeness. Without diplomacy implies being blunt or brusque, and antonyms for this would include adjectives like gentle, mild, tempered, moderate, and considerate. Such antonyms would suggest a tone that is kind, gentle, and occasionally humorous, having the ability to analyze situations and propose solutions with an understanding of their impact on others. In contrast to words such as aggression, frankness, or insensitivity, diplomacy is an approach that prioritizes mediation and conflict resolution, emphasizing respect and understanding for different points of view.