The Suda headword is ou(=, genitive of the relative pronoun o(/s or of e(/o, ou(=. This phrase occurs twice in Apollonius Rhodius, Argonautica 1.362 (web address 1) and 4.1471; George W. Mooney in his notes characterizes it as a "peculiar combination of genitives in the sense of au)tou= e(/qen, e(autou=" (i.e., a reflexive pronoun). Ps.Zonaras has the same headword and gloss as the Suda; Tittmann obelizes the entry there.
Homer, Iliad 1.114 (web address 2) has instead the negative ou): Agamemnon says Chryseis is not worse than her (Clytemnestra). Other lexica and grammarians comment on this passage.
For e(/qen (an epic/poetic form of the third-person pronoun e(/o, ou(=), see already alpha 3307; also Hesychius epsilon654, epsilon4024, epsilon4340, omicron1600, and pi3396.