fornicatim

σκληρόν σοι πρὸς κέντρα λακτίζειν → it is hard for thee to kick against the pricks, it is hard for you to kick against the goads

Latin > English (Lewis & Short)

fornĭcātim: adv. fornicatus,
I in the form of an arch, archwise, Plin. 16, 42, 81, § 223.