say it: STOO-ing
stewing is a noun meaning "an extreme state of worry and agitation". It carries 2 recorded senses.
an extreme state of worry and agitation
“his stewing over the fight kept him awake most of the night”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for stewing come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.