Definition for Unauthentic:

• Not genuine or true.

Synonyms for Unauthentic:

• adj.

  •spurious (adjective)
  • sham,
  • deceitful,
  • pretended,
  • simulated,
  • phony,
  • bent,
  • deceptive,
  • bogus,
  • make-believe,
  • artificial,
  • assumed,
  • feigned,
  • ersatz,
  • illegitimate,
  • pretend,
  • pirate,
  • put-on,
  • ungenuine,
  • mock,
  • contrived,
  • bum,
  • affected,
  • framed,
  • dummy,
  • imitation,
  • substitute,
  • unreal,
  • pseudo,
  • false,
  • faked,
  • forged,
  • specious,
  • bastard.

• n.

  •counterfeit (noun)
  • counterfeit.
  •imitative (noun)
  • imitative.

• Other synonyms:

  •adj.
  • spurious.
  •n.
  • apocryphal,
  • fictitious,
  • inauthentic,
  • supposititious,
  • Uncanonical.

Antonyms for Unauthentic:

• adj.

  • spurious
    real, true, authentic, genuine.
  • Other antonyms:
    natural, actual, bona fide, valid, echt.

• Other antonyms:

  • n.
    nonimitative.