fornicatim
From LSJ
ἡδονήν, μέγιστον κακοῦ δέλεαρ → pleasure, the greatest incitement to evildoing | pleasure, a most mighty lure to evil | pleasure, the great bait to evil
Latin > English (Lewis & Short)
fornĭcātim: adv. fornicatus,
I in the form of an arch, archwise, Plin. 16, 42, 81, § 223.