Shallow (?), a. [Compar. Shallower (?); superl. Shallowest.] [OE. schalowe, probably originally, sloping or shelving; cf. Icel. skjālgr wry, squinting, AS. sceolh, D. & G. scheel, OHG. schelah. Cf. Shelve to slope, Shoal shallow.] 1. Not deep; having little depth; shoal. “Shallow brooks, and rivers wide.” Milton.
[1913 Webster]

2. Not deep in tone. [R.]
[1913 Webster]

The sound perfecter and not so shallow and jarring. Bacon.
[1913 Webster]

3. Not intellectually deep; not profound; not penetrating deeply; simple; not wise or knowing; ignorant; superficial; as, a shallow mind; shallow learning.
[1913 Webster]

The king was neither so shallow, nor so ill advertised, as not to perceive the intention of the French king. Bacon.
[1913 Webster]

Deep versed in books, and shallow in himself. Milton.
[1913 Webster]

Shallow, v. t. To make shallow. Sir T. Browne.
[1913 Webster]