Ergo

(·conj / ·adv) Therefore; consequently;

— often used in a jocular way.

ergo
ergō (rarely with short o in Ov. and the post-Aug. poets, Ov. H. 5, 59 Lennep.; id. Tr. 1, 1, 87; ...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
ergo
ergō (ergo, O.) subst.and adv.I I I. As abl.following a gen, in consequence of, on account of, bec...

An Elementary Latin Dictionary