Synonyms for Superficial:

adj.

imperfect (adjective)
sketchy.
shallow (adjective)
epidermal, shallow, surface, cursory, skin-deep.
unimportant (adjective)
minor, mere, inconsequential, meaningless, unconsidered, irrelevant, of no consequence/of little consequence.
vain (adjective)
egocentric, haughty, self-flattering, self-admiring, self-centered, conceited, proud, narcissistic, foppish, self-satisfied, self-applauding, Preening, boastful, smug, vain, egoistic.

n.

complacency, complacent, slipshod, careless, like a bull in a china shop, lackadaisical, casual, remiss. base, bevel, brim, apex, bottom, back, confines, corner, edge, bump. cast, externals, look, under/in the guise of, effect, face, aspect, Styling, appearance. light touch, outstanding, undone, abortive, unfinished, pending, incomplete, sketchy. flimsy (noun)
hasty, unenlightened, external, short-sighted, narrow-minded, warped, outward, ignorant, summary, exterior, perfunctory, desultory, purblind, partial, untrustworthy, prejudiced, cosmetic.
superficial (noun)
dilettanteish, glib, unimportant, trivial, ostensible, dilettante, looking, insignificant, facile, seeming, surface, sounding, apparent, shallow, skin-deep, dilettantish.

v.

beautifying (verb)
cosmetic.

Other synonyms:

light touch. partial, unfinished, undone, external. outstanding, pending, outward, incomplete. cursory
perfunctory.
trivial
trivial.
untrained
ignorant.

Usage examples for superficial

  1. 100. " I will not be able to convince you how superficial the reformation is." – The Grammar of English Grammars by Goold Brown
  2. A mere visitor's impressions must necessarily be superficial however much they may be backed up by reading. – Town Life in Australia 1883 by R. E. N. (Richard) Twopeny