fulaing, suffer (thou), Irish fulangaim, Early Irish fulangim, Old Irish fuloing, sustinet, inf. fulang: "under-go"; from fo and *long, going, root leng, spring, go, as in leum, q.v. Further allied is German verlangen, desire, English long, Latin longus.
Etymological dictionary of the Gaelic language.
Alexander Gairm Publications.
1982.