instigate or stir up (an undesirable or violent sentiment or course of action).
they accused him of fomenting political unrest
sinonim: instigate, incite, provoke, agitate, excite, stir up, whip up, encourage, urge, fan the flames of
bathe (a part of the body) with warm or medicated lotions.
Foment the limb with cloths immersed in a strong decoction of hops, and repeat two or three times a day.