afoam /əˈfoʊm/adjective 2adverb 1 adjective2 •In a foaming state; producing foam.The sea is all afoam. •Covered or filled (with something foaming or resembling foam).mighty horns of ale, and cups of gold afoam / With strong nut-coloured mead — 1896 adverb1 •In a foaming state.