tantopere or tantō opere adv.,
so earnestly, so greatly, in so high a degree, so very, so much: quia tu tanto opere suaseras, coepi, T.: si studia Graecorum vos tanto opere delectant: tantopere de potentatu contendere, Cs.
tantŏpĕre, v. tantus, I. ...
A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.