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adjective \ˈfȯls\

Simple Definition of false

  • : not real or genuine

  • : not true or accurate; especially : deliberately untrue : done or said to fool or deceive someone

  • : based on mistaken ideas

Full Definition of false


  1. 1 :  not genuine <false documents> <false teeth>

  2. 2 a :  intentionally untrue <false testimony> b :  adjusted or made so as to deceive <false scales> <a trunk with a false bottom> c :  intended or tending to mislead <a false promise>

  3. 3 :  not true <false concepts>

  4. 4 a :  not faithful or loyal :  treacherous <a false friend> b :  lacking naturalness or sincerity <false sympathy>

  5. 5 a :  not essential or permanent —used of parts of a structure that are temporary or supplemental b :  fitting over a main part to strengthen it, to protect it, or to disguise its appearance <a false ceiling>

  6. 6 :  inaccurate in pitch <a false note>

  7. 7 a :  based on mistaken ideas <false pride> b :  inconsistent with the facts <a false position> <a false sense of security>

  8. 8 :  threateningly sudden or deceptive <don't make any false moves>

false·ly adverb
false·ness noun

Examples of false

  1. Indicate whether each of the following statements is true or false.

  2. He registered at the hotel under a false name.

Origin of false

Middle English fals, faus, from Anglo-French & Latin; Anglo-French, from Latin falsus, from past participle of fallere to deceive

First Known Use: 12th century

Synonym Discussion of false

faithless, false, disloyal, traitorous, treacherous, perfidious mean untrue to what should command one's fidelity or allegiance. faithless applies to any failure to keep a promise or pledge or any breach of allegiance or loyalty <faithless allies>. false stresses the fact of failing to be true in any manner ranging from fickleness to cold treachery <betrayed by false friends>. disloyal implies a lack of complete faithfulness to a friend, cause, leader, or country <disloyal to their country>. traitorous implies either actual treason or a serious betrayal of trust <traitorous acts punishable by death>. treacherous implies readiness to betray trust or confidence <a treacherous adviser>. perfidious adds to faithless the implication of an incapacity for fidelity or reliability <a perfidious double-crosser>.

Rhymes with false




Definition of false

  1. :  in a false or faithless manner :  treacherously <his friends played him false>

13th Century

First Known Use of false

13th century

Medical Dictionary


adjective \ˈfȯls\

Medical Definition of false


  1. 1:  not corresponding to truth or reality <a test for HIV which gave false results>

  2. 2:  artificially made <false teeth>

  3. 3:  of a kind related to or resembling another kind that is usually designated by the unqualified vernacular <false oats>

  4. false·ly adverb
    false·ness noun

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February 13, 2016

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