say it: MUHT-ur-ing
muttering is a noun meaning "a low continuous indistinct sound; often accompanied by movement of the lips without the production of articulate speech". It carries 2 recorded senses.
a low continuous indistinct sound; often accompanied by movement of the lips without the production of articulate speech
a complaint uttered in a low and indistinct tone
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 muttering 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.