"Whipt through" is a phrase that can be used to describe an action that happens quickly or swiftly. Antonyms for this phrase could include slowing down, taking one's time, or moving at a leisurely pace. Other antonyms could be deliberate, slow, ponderous or unhurried. When someone "whipt through" a task or project, they may have rushed or been hasty, so antonyms could include being thoughtful or thorough. Overall, the antonyms for "whipt through" would be words that convey a sense of taking one's time, being careful, and not rushing through a task or activity.