contermino
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)
Latin > English (Lewis & Short)
contermĭno: āre, v. n. conterminus: alicui,
I to be a borderer, to border upon; perh. only Amm. 14, 2, 5; 23, 6, 45.