There is no synonym for fabe because there is no such word as fabe.
Motionless is a synonym for calmness. It begins with the letter m.
"Myth" is the closest answer, although strictly speaking, it is not a synonym of fable, as it does not mean the same thing.
A synonym for fable (4 letters, beginning with M) is myth.
Merry is a synonym for happy. It begins with the letter m.
Marvelous is a synonym for good. It begins with the letter M.
Marvelous is a synonym for good. It begins with the letter m.
Murky is a synonym for gloomy.
A four-letter word for "jug" starting with "e" is usually "ewer."
The word is a monsoon.
A favorite winter word that starts with M is Miami.
Militant is a synonym for aggressive. Martial is a synonym for aggressive.
Mobility and maneuver are synonyms for movement. They begin with the letter M.
makevelijughuyokiiuuijbu (Gaelic for how are you doing today)
Malikiya (Swahili for my angel)
Mimeograph/mimeo. mimic