Definition: [verb] (of a substance) undergo fermentation.
Example: the drink had fermented, turning some of the juice into alcohol
Definition: [verb] incite or stir up (trouble or disorder).
Example: the politicians and warlords who are fermenting this chaos
Definition: [noun] agitation and excitement among a group of people, typically concerning major change and leading to trouble or violence.
Example: a period of political and religious ferment
Definition: [noun] a fermenting agent or enzyme.