ἀνεπιμελησία
From LSJ
ἵνα οὖν μηδ' ἐν τούτῳ δῷ αὐτοῖς λαβήν (Photius, Fragments on the Epistle to the Romans 483.26) → so that he doesn't give them even here a handle (= an opportunity for refutation)
Greek (Liddell-Scott)
ἀνεπιμελησία: ἡ, οὐσ. τοῦ ἑπομ., Ναυκράτ. εἰς τ. θάν. Θ. Στουδ. σ. 1836, ἔκδ. Μί.