Moving at snail's pace means moving extremely slowly. The word "snail" represents something that is slow and sluggish. The opposite of moving at a snail's pace is moving at lightning speed. This phrase indicates a quick or rapid movement, symbolized by the word "lightning." Other antonyms for moving at a snail's pace include rapidly, swiftly, briskly, quickly, and expeditiously. All these words denote movement that is fast, smooth, and efficient. Whereas, moving at a snail's pace represents a slow, frustrating, and tedious journey. Therefore, using these antonyms will improve the quality and clarity of any writing, painting a vivid picture of fast and slow-moving scenarios in the reader's or viewer's mind.