māgnoperē (Cs., L.) or māgnō opere (T., C.), adv. with sup. māximō opere abl. of magnum opus, very much, greatly, exceedingly, particularly: nullā magnopere clade acceptā, L.: magno opere iucundum (i. e. valde).

—Earnestly, zealously, vehemently, heartily, urgently: magno opere velle: magnopere cohortatus, Cs.: suadere, L.: quā de re magno opere vobis providendum est: mihi maxumo opere edicire, T.: a te maximo opere quaeso, ut, etc., most particularly.