Nouns

(n)fret, stew, sweat, lather, switheragitation resulting from active worry“don't get in a stew”, “he's in a sweat about exams”
(n)stewfood prepared by stewing especially meat or fish with vegetables

Verbs

(v)grizzle, brood, stewbe in a huff; be silent or sullen
(v)stew, grudgebear a grudge; harbor ill feelings
(v)stewcook slowly and for a long time in liquid“Stew the vegetables in wine”