Pronunciation (US) IPA (key): [ˈsɔɫ.jʊ.bəɫ] Audio (UK)(file) Adjective Positive soluble Comparative more soluble Superlative most soluble If something is soluble, it is able to be dissolved. Antonym: insoluble Sugar is soluble in water. Related words solubilityWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads