The antonyms for the phrase "taking one's time" would be hurrying, rushing, speeding, and hastening. These words imply that someone is in a hurry to complete a task, without taking enough time to do it correctly or giving it the attention it deserves. People who tend to rush through things often make mistakes or overlook important details, and can create unnecessary stress for themselves and those around them. In contrast, taking one's time implies a more deliberate approach, giving full attention to the task at hand, and being mindful of the details that make a difference. When taking one's time, there is a sense of calmness and focus, which often leads to better outcomes.
