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See more synonyms for re-search on Thesaurus.com
verb (used with or without object)
  1. to search or search for again.
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Origin of re-search

First recorded in 1740–50; re- + search
Can be confusedre-search research


[ri-surch, ree-surch]
  1. diligent and systematic inquiry or investigation into a subject in order to discover or revise facts, theories, applications, etc.: recent research in medicine.
  2. a particular instance or piece of research.
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verb (used without object)
  1. to make researches; investigate carefully.
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verb (used with object)
  1. to make an extensive investigation into: to research a matter thoroughly.
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Origin of research

1570–80; (v.) < Middle French recercher to seek, Old French, equivalent to re- re- + cercher to search; (noun) < Middle French recerche
Related formsre·search·a·ble, adjectivere·search·er, re·search·ist, nounpro·re·search, adjectiveun·der·re·search, verb (used with object)
Can be confusedre-search research


See more synonyms for on Thesaurus.com
1. scrutiny, study. See investigation. 4. study, inquire, examine, scrutinize.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


Examples from the Web for researched

Contemporary Examples

Historical Examples

  • They were careful not to forget the drawers, which their hands searched and researched.

  • The whole town was searched and researched, but all to no purpose.

    Gabriel Tolliver

    Joel Chandler Harris

  • If a word or name did not fit the context, it was researched, and corrections made, if necessary.

  • Sequential Problem Solving is about finding alternative solutions to problems and executing well researched plans.

  • As it was, Brennan was unsure of his legal rights, and he could not plan until he had researched the problem most thoroughly.

    The Fourth R

    George Oliver Smith

British Dictionary definitions for researched


  1. systematic investigation to establish facts or principles or to collect information on a subject
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  1. to carry out investigations into (a subject, problem, etc)
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Derived Formsresearchable, adjectiveresearcher, noun

Word Origin

C16: from Old French recercher to seek, search again, from re- + cercher to search
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 researched



1570s, "act of searching closely," from Middle French recerche (1530s, Modern French recherche), back-formation from Old French recercher (see research (v.)). Meaning "scientific inquiry" is first attested 1630s. Phrase research and development is recorded from 1923.

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1590s, from Middle French recercher, from Old French recercher "seek out, search closely," from re-, intensive prefix (see re-), + cercher "to seek for" (see search (v.)). Related: Researched; researching.

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"to search again," 1760, from re- + search (v.). Related: Re-searched; re-searching.

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Online Etymology Dictionary, © 2010 Douglas Harper