magisterially

adverb

mag·​is·​te·​ri·​al·​ly ¦majə¦stirēəlē 

-li

1

a

: with an authoritative manner because of knowledge and experience : masterfully

could assert that light is corpuscular … so magisterially that astronomical expeditions could be organized

—Alvin Johnson

b

: with a lordly air : dictatorially

it will not do to say magisterially, "Take the child away!"

—J. L. Lowes

2

: in the position or with the authority of a magistrate

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