malleability has 1 distinct synonym spread across 1 of its 1 sense. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. Its one recorded opposite is unmalleability.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
the property of being physically malleable; the property of something that can be worked or hammered or shaped without breaking
Synonyms, antonyms and the broader and narrower relations for malleability come from Princeton University’s WordNet. Full sources and licences.