shallow

shallow is an Adverb

Definition:

[1] Not deep; having little depth; shoal. "Shallow brooks, and rivers wide." Milton.

[2] Not deep in tone. [R.] The sound perfecter and not so shallow and jarring. Bacon.

[3] Not intellectually deep; not profound; not penetrating deeply; simple; not wise or knowing; ignorant; superficial; as, a shallow mind; shallow learning. The king was neither so shallow, nor so ill advertised, as not to perceive the intention of the French king. Bacon. Deep versed in books, and shallow in himself. Milton.