afire adj. + Add to list US //əˈfaɪɹ// UK //ɐfˈaɪə// afire SynonymsEtymology Synonyms ablazeaflameaflarealightOriginMEafire→ENafire 13ᵗʰc., from Middle English afire, equivalent to a- (“on”) + fire. Figurative usage from late 14ᵗʰc.