eadhon

to wit, namely, viz, so Irish, Old Irish idón, *id-souno-, "this here"; for id, See eadh, and souno- is from *sou, *so, as in so. Cf. Greek ou$$`$$n-tos. Stokes (Celt. Decl.) takes id from it, is, goes, root i, go, of Latin eo, Greek $$Gei$$'$$nmi, etc.; he regards id as part of the verb substantive.