fermented; fermenting; ferments
Definition of ferment
(Entry 1 of 2)
1 : to undergo fermentation The wine ferments in oak barrels.
2 : to be in a state of agitation or intense activity
everything ferments in him—his thoughts, sensations, and memories; nothing stays quiet— Janet Flanner
1 : to cause to undergo fermentation Yeast ferments the sugar in the juice.
2 : to work up (as into a state of agitation) : foment
ferment
nounDefinition of ferment (Entry 2 of 2)
1a : a living organism (such as a yeast) that causes fermentation by virtue of its enzymes
b : enzyme
2a : a state of unrest : agitation
b : a process of active often disorderly development
the great period of creative ferment in literature— William Barrett
Keep scrolling for more
Keep scrolling for more
Keep scrolling for more
Keep scrolling for more
Test Your Vocabulary
January 2021 Words of the Day Quiz

- Which is a synonym of insouciance?

Test your vocabulary with our 10-question quiz!
TAKE THE QUIZ
Spell words. Make bears.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games




















Share ferment
Time Traveler for ferment
The first known use of ferment was in the 14th century
See more words from the same century