liar

A liar is someone who doesn't tell the truth. A liar tells lies.

"Liar, liar, pants on fire," a phrase of unknown origin, is a children's jump-rope rhyme also used as a playground taunt. Adults, and especially political commentators, have also been known to use the phrase or part of it as a particularly demeaning insult aimed at politicians who make outrageous claims that can't possibly be true. Notice that liar ends in -ar, not -er, as you might expect.

Definitions of liar
  1. noun
    a person who has lied or who lies repeatedly
    synonyms: prevaricator
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    Antonyms:
    square shooter, straight arrow, straight shooter
    a frank and honest person
    examples:
    Ananias
    a habitual liar (after a New Testament character who was struck dead for lying)
    types:
    false witness, perjurer
    a person who deliberately gives false testimony
    fabricator, fibber, storyteller
    someone who tells lies
    type of:
    beguiler, cheat, cheater, deceiver, slicker, trickster
    someone who leads you to believe something that is not true
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