English Etymology From un- + inflectable. Adjective uninflectable (not comparable) (linguistics) Not inflectable; that cannot be inflected. Translations that cannot be inflected Danish: ubøjelig Esperanto: senfleksia, nefleksiebla French: invariable (fr) German: unbeugbar (de), unflektierbar (de), unveränderlich (de) Ingrian: painumatoin Polish: nieodmienny (pl), nieodmienialny Swedish: oböjlig (sv)