dextĕre and dextrē,
adv., dexterously, skilfully : dextre obeundo officia, Liv. 1, 34 fin.—Comp. : nemo dexterius fortunā est usus, Hor. S. 1, 9, 45.
dexterē and dextrē adv.with comp.dexter, dexterously, skilfully : obeundo officia, L.: nemo dexter...
An Elementary Latin Dictionary