agus

and so Irish, Old Irish acus, ocus, Book of Deer acus, Old Welsh ac, Breton hag; allied is fagus, near, Old Irish ocus, Welsh agos, Breton hogoz: *aggostu-, ad-gos-; root ges, gos, carry; Latin gero, aggestu-s, mound (Zimmer). Stokes refers it to the root angh, choke, narrow; Celtic aggúst-, from pre-Celtic aghnústu- (Latin angustus), with accent on syllable after the root - gn with the accent on the following vowel being supposed, as in Teutonic, to produce gg. The derivation from root onk, enk, as in thig, is not tenable in view of the Welsh.