Synonyms for Shallow:

adj.

facile (adjective)
hasty, light.
frivolous (adjective)
ill-considered.
ignorant (adjective)
mindless.
inconsiderable (adjective)
inconsiderable.
indiscriminate (adjective)
undiscriminating.
low (adjective)
bottommost.
senseless (adjective)
silly.
shallow (adjective)
cursory, epidermal, farcical, foolish, frivolous, frothy, idle, inconsiderable, lightweight, petty, piddling, shoal, simple, sketchy, skin-deep, slight, superficial, surface, trifling, uncritical, unthinking, wishy-washy.
uncritical (adjective)
uncritical.

n.

bottomless, deep, hasty, ill-considered, impetuous, impulsive, inconsiderable, irresponsible, mindless, slight, undiscriminating, unthinking. bottommost, come down, deeply, depth, dull, farcical, fathom, fathomless, foolish, frivolous, frothy, idle, insane, lightweight, namby-pamby, petty, philosophic, piddling, profound, silly, simple, trifling, unintelligent, wishy-washy. breathless, bronchial, chesty, choke, heavily, indrawn, labored, one-dimensional, pulmonary, sketchy, uncritical. object (noun)
shoal.
sandbar (noun)
shoal.
shallow (noun)
ankle-deep, fordable, knee-deep, light, reefy, shelfy, shelvy, shoal, shoaly, skin-deep, superficial, surface, wakeful.

v.

change (verb)
shoal.

Other synonyms:

ill-considered, mindless, one-dimensional, undiscriminating, unthinking. foolish, impetuous, impulsive, irresponsible, uncritical. dull, sketchy. empty
idle.
stupid
simple.
trivial
frothy.
Other relevant words:
ankle-deep, bottomless, bottommost, breathless, bronchial, chesty, choke, cursory, deeply, depth, dull, farcical, fathom, fathomless, foolish, fordable, frivolous, frothy, hasty, heavily, idle, ill-considered, impetuous, impulsive, inconsiderable, indrawn, insane, irresponsible, knee-deep, labored, light, lightweight, mindless, namby-pamby, one-dimensional, petty, philosophic, piddling, profound, pulmonary, reefy, shelfy, shelvy, shoal, shoaly, silly, simple, sketchy, slight, trifling, uncritical, undiscriminating, unintelligent, unthinking, wakeful, wishy-washy.

Usage examples for shallow

  1. Their boat swung around in the shallow water, and did not move any more. – Bunny Brown and his Sister Sue by Laura Lee Hope
  2. Perhaps they can tell us what the snail is doing here- It's very unusual for him to be in shallow water like this. – The Voyages of Doctor Dolittle by Hugh Lofting
  3. I have searched all the shallow part so closely that I doubt whether even a sixpence could escape me, unless it were buried in the mud or pebbles. – Erema My Father's Sin by R. D. Blackmore