estuate
To swell up or rage; to be agitated.
intransitive, obsolete
it is onely profitable to a ſtomacke that eſtuateth with heat
Where it comes from
Borrowed from Latin aestuātus, past participial of aestuō (“to be in violent motion, to boil up, burn”), from aestus (“boiling or undulating motion, fire, glow, heat”).
Adapted from the Wiktionary entry estuate (CC BY-SA 4.0).