Antonyms for the phrase "kicked up a fuss" could include terms such as calm, composed, placid, serene, and tranquil. Alternatively, other phrases that could be used to describe a situation where someone didn't cause a fuss might include kept their cool, took it in stride, handled it with grace, or navigated the situation smoothly. While some situations may require assertiveness or speaking up, there are also times when remaining calm and collected can be equally effective in resolving a problem or conflict. Being able to recognize and choose the appropriate response for a given situation can help individuals maintain strong relationships and avoid unnecessary stress or drama.