adjective
1. moving or able to move, operate, function, or take effect quickly; quick; swift; rapid: a fast horse; a fast pain reliever; a fast thinker.
2. done in comparatively little time; taking a comparatively short time: a fast race; fast work.
3. (of time)
a. indicating a time in advance of the correct time, as of a clock.
b. noting or according to daylight-saving time.
4. adapted to, allowing, productive of, or imparting rapid movement: a hull with fast lines; one of the fastest pitchers in Baseball.
5. characterized by unrestrained conduct or lack of moral conventions, esp. in sexual relations; wanton; loose: Some young people in that era were considered fast, if not downright promiscuous.
6. characterized by hectic activity: leading a fast life.
7. resistant: acid-fast.
8. firmly fixed in place; not easily moved; securely attached.
9. held or caught firmly, so as to be unable to escape or be extricated: an animal fast in a trap.
10. firmly tied, as a knot.
11. closed and made secure, as a door, gate, or shutter.
12. such as to hold securely: to lay fast hold on a thing.
13. firm in adherence; loyal; devoted: fast friends.
14. permanent, lasting, or unchangeable: a fast color; a hard and fast rule.
15. Informal .
a. (of money, profits, etc.) made quickly or easily and sometimes deviously: He earned some fast change helping the woman with her luggage.
b. cleverly quick and manipulative in making money: a fast operator when it comes to closing a business deal.
16. Photography .
a. (of a lens) able to transmit a relatively large amount of light in a relatively short time.
b. (of a film) requiring a relatively short exposure time to attain a given density.
17. Horse Racing .
a. (of a track condition) completely dry.
b. (of a track surface) very hard.
adverb
18. quickly, swiftly, or rapidly.
19. in quick succession: Events followed fast upon one another to the crisis.
20. tightly; firmly: to hold fast.
21. soundly: fast asleep.
22. in a wild or dissipated way.
23. ahead of the correct or announced time.
24. Archaic . close; near: fast by.
noun
25. a fastening for a door, window, or the like.
Idioms
26. play fast and loose. play ( def. 80 ) .
27. pull a fast one, Informal . to play an unfair trick; practice deceit: He tried to pull a fast one on us by switching the cards.
quick, rapid, accelerated, speedy, swift
A synonym is a word that shares the same meaning as a different word. Example: Planes are big; Planes are large.
Satyagraha
fast
'presto' means fast, or 'allegro' means lively and fast
freezing chilly ice cold
Slow and fast are antonyms; a synonym is a word with a similar meaning.
jet
jot
Fast
Satyagraha means "hold fast to the truth"
The word for fast is "Hayai", as in "Kuruma WA Hayai", meaning "The car is fast". When you change it to Hayaku, it can be used as an adjective, such as "Hayaku renraku shimashita", meaning "I contacted him fast."
Approximately 85 times, however the word is used at times with different meanings.