[thair-fawr, -fohr]


in consequence of that; as a result; consequently: I think; therefore I am.

Origin of therefore

1125–75; Middle English ther(e)fore, variant of therfor therefor
Can be confusedtherefor therefore

Synonyms for therefore

Synonym study

Therefore, wherefore, accordingly, consequently, so, then all introduce a statement resulting from, or caused by, what immediately precedes. Therefore (for this or that reason) and wherefore (for which reason) imply exactness of reasoning; they are especially used in logic, law, mathematics, etc., and in a formal style of speaking or writing. Accordingly (in conformity with the preceding) and consequently (as a result, or sequence, or effect of the preceding), although also somewhat formal, occur mainly in less technical contexts. So (because the preceding is true or this being the case) and then (since the preceding is true) are informal or conversational in tone. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for therefore

Contemporary Examples of therefore

Historical Examples of therefore

  • This is the moment, therefore, for us to frame our inexorable resolution.

    The Wrack of the Storm

    Maurice Maeterlinck

  • Religious thought, like all else, is subject to a law of evolution, and therefore passes through regular stages.


    Joseph Le Conte

  • To these organisms, therefore, the experiments of Nussbaum cannot be applied.

  • Latent heat is therefore not dissipated, it is merely transformed and has taken on the form of molecular elasticity.

  • Therefore I thought nothing of undertaking a sixty miles' drive in broiling heat and along a villainous road.

    South African Memories

    Lady Sarah Wilson

British Dictionary definitions for therefore


sentence connector

thus; hence: used to mark an inference on the speaker's partthose people have their umbrellas up: therefore, it must be raining
consequently; as a resultthey heard the warning on the radio and therefore took another route
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for therefore

Old English þærfore; from there + fore, Old English and Middle English collateral form of for. Since c.1800, therefor has been used in sense of "for that, by reason of that;" and therefore in sense of "in consequence of that."

Online Etymology Dictionary, © 2010 Douglas Harper