The Collaborative International Dictionary of English v.0.48:
onymous \onymous\ adj. bearing a name; as, articles in magazines are usually onymous. Opposite of anonymous. Syn: signed. [WordNet 1.5 +PJC]WordNet (r) 3.0 (2006):
onymous adj 1: bearing a name; "articles in magazines are usually onymous" [ant: anon., anonymous]