Definitions of liar

  1. A person who knowingly utters falsehood; one who lies.
  2. One who lies or utters falsehood.
  3. One who utters falsehood.
  4. One who utters a falsehood.
  5. One who knowingly utters falsehoods.
  6. One who habitually tells falsehoods; to give the lie to, to charge with falsehood.