Adverb
In a proficient manner.
Source: Webster's dictionaryhe dealt proficiently with the problem Source: Internet
As opposed to it being evil, it is an earth-bound force that is most proficiently harvested by women. Source: Internet
And having an idea about your traffic, potential clients, their locations, visiting hours and duration can help you serve them proficiently and in the best possible manner. Source: Internet
His combat skills are so great that he managed to kill a lion with his bare hands, to beat Daredevil in hand-to-hand combat as proficiently as Steve Rogers himself. Source: Internet
Erac's Cousin was forced to become a fighter instead, and learned to fight proficiently with two weapons simultaneously. Source: Internet
Language is acquired within the first few years of life, and all humans under normal circumstances are able to acquire language proficiently. Source: Internet