Accelerated, affix, boon, debauched, a mile a minute, abstain from food, go on hunger strike, and eat nothing are another word for fast. Slow and slowly are the opposites of fast. On this page, find 170 synonyms for fast, parts of speech, and examples of fast sentences.
1. speedy
2. secure
3. loyal
4. wild
5. quickly
6. refrain from eating
The car moves fast today.
He finished the project fast.
Fast runners win the race.
The internet speed is fast.