Added 9 October 2026 simmering /ˈsɪməɹɪŋ/ noun Categories: ActionsRare Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about simmering at Wordnik → Where our words come from → Cooking in a liquid that has been brought to a boil. Related Words: stewingboilingsmoulderingburningrumblingblazingraginglurkingescalatingsteamsteaming Back to today's word