These english synonyms and antonyms for all kind of movements has been arranged by categories. For each word (fast, quick, swift, expeditious, slow, laggard, sluggish, tardy, ...) you will find about 10 to 40 synonyms. Antonyms are included in the sense, that the words consists mostly of pairs which have the opposite meaning.
Synonyms for Fast
• Meaning of these synonyms (adjectives): Marked by rapidity of motion or action
• Example sentence: The teacher was a good driver - if a trifle fast.
Synonyms for Slow
• Meaning of these synonyms (adjectives): Slow to respond or to perform / At a low rate of speed
• Example sentence: True healing has to come from within: a matter of patient, slow plod towards self-understanding, of gritting the teeth and enduring boredom.
Speak or write fast (instead of slow)? Try to use some of these Abbreviations — the page lists the 50 most commonly used.