Nouns

(n)agitation, ferment, fermentation, tempestuousness, unresta state of agitation or turbulent change or development“the political ferment produced new leadership”, “social unrest”
(n)fermenta substance capable of bringing about fermentation
(n)zymosis, zymolysis, fermentation, fermenting, fermenta process in which an agent causes an organic substance to break down into simpler substances; especially, the anaerobic breakdown of sugar into alcohol

Verbs

(v)fermentbe in an agitated or excited state“The Middle East is fermenting”, “Her mind ferments”
(v)fermentwork up into agitation or excitement“This religion is fermenting Africa”
(v)ferment, workcause to undergo fermentation“We ferment the grapes for a very long time to achieve high alcohol content”, “The vintner worked the wine in big oak vats”
(v)sour, turn, ferment, workgo sour or spoil“The milk has soured”, “The wine worked”, “The cream has turned — we have to throw it out”