say it: FURM-nuhs
firmness is a noun meaning "the muscle tone of healthy tissue". It carries 4 recorded senses.
the trait of being resolute
“his resoluteness carried him through the battle”
“it was his unshakeable resolution to finish the work”
the property of being unyielding to the touch
the quality of being steady or securely and immovably fixed in place
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 firmness 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.