Double quick is a phrase that refers to a very fast speed. Antonyms are words that have the opposite meaning of another word. Some antonyms for double quick include slow, leisurely, unhurried, relaxed, and easygoing. These words describe a pace that is much slower than double quick. Slow implies a lack of urgency, while leisurely suggests a calm and easy pace. Unhurried suggests taking one's time, and relaxed describes a feeling of ease and tranquility. Easygoing implies a relaxed attitude, without any rush or pressure. Using these antonyms can add depth and complexity to your writing, and help you convey a clear and precise message.