1. (n.) That which causes fermentation, as yeast, barm, or fermenting beer.

2. (n.) Intestine motion; heat; tumult; agitation.

3. (n.) A gentle internal motion of the constituent parts of a fluid; fermentation.

4. (n.) To cause ferment of fermentation in; to set in motion; to excite internal emotion in; to heat.

5. (v. i.) To undergo fermentation; to be in motion, or to be excited into sensible internal motion, as the constituent particles of an animal or vegetable fluid; to work; to effervesce.

6. (v. i.) To be agitated or excited by violent emotions.

acetification acetify acidification acidify acidulate acidulation ado agent agitate agitation ailment alkalify alkalization alkalize alterant alterative alterer arouse bacteria beat beat up blow the coals blubber bluster bobbery boil boil over boiling borate bother botheration brawl brew broil brouhaha bubble bubble over bubble up bubbliness bubbling burble burst bustle buttermilk cacophony carbon dioxide carbonate carbonation catalysis catalyst catalytic agent catalyze chaos chemical chemicalization chlorinate churn churn up clamor commotion conturbation convulse convulsion disarrange discompose discomposure disorder disquiet disquietude disturb disturbance dudgeon ebullience ebulliency ebullition eddy effervesce effervescence effervescency electrolysis electrolyze embroilment enzyme excite excitement fan fan the flame fanaticism feed the fire feery-fary fermentation fever feverishness fidgetiness fidgets fire fit fizz fizzle flap flurry fluster flutter flutteration flutteriness foam foaming foment fomentation foofaraw frenzy fret froth frothiness frothing fume furor furore fury fuss fussiness guggle gurgle heat heat up high dudgeon hiss homopolymerize hubbub huff hullabaloo hurly-burly hurry hurry-scurry hydrate hydrogenate hydrogenation hydroxylate impassion incense incite inflame innovationist innovator inquietude instigate introducer isomerism isomerize jitters jumpiness leaven leavening maelstrom malaise metamerism metamerization miff modificator modifier moil mother nerviness nervosity nervousness nettle nitrate nitration outcry oxidation oxidization oxidize paddle pandemonium passion pell-mell pepsin pepsinate peroxidize perturb perturbate perturbation pet phosphatization phosphatize pique plop polymerism polymerization polymerize position isomerism pother precursor provoke put up to racket rage raise rally reduce reduction restiveness restlessness rile ripple rise roil roughen rouse rout row ruckus ruffle rumple rumpus saturization scramble seethe seething set on shake shake up sic on simmer smolder soda sour sparkle spasm spumescence spurt stew stir stir the embers stir up storminess sulfate sulfatize sulfonate sweat swirl swirling tempestuousness tickle tiff to-do transformer transmogrifier trepidation trepidity trouble tumult tumultuation tumultuousness