In a manner that adopts a pose of naïveté, possibly to make a point or to deceive.
In an unnoble manner; in a manner unbecoming of true honor or dignity; unworthily.
In a manner that is not frank or open; deceptively.
In a sagacious manner, in a way that is clever, shrewd, observant, keen of intellect or discernment, cunning or with ability and aptitude; sagely.