View synonyms for thorough


[ thur-oh, thuhr-oh ]


  1. executed without negligence or omissions:

    a thorough search.

    Synonyms: total, unqualified, sheer, downright, exhaustive, in-depth

    Antonyms: superficial, partial

  2. thorough enjoyment.

  3. extremely attentive to accuracy and detail; painstaking: a thorough analysis.

    a thorough worker;

    a thorough analysis.

  4. having full command or mastery of an art, talent, etc.:

    a thorough actress.

  5. extending or passing through.


  1. Archaic. through.


  1. (initial capital letter) English History. the administrative policies of the Earl of Stafford and Archbishop Laud during the reign of Charles I: so called because they were uncompromisingly carried out.



/ ˈθʌrə /


  1. thoroughgoing policy, as adopted in England by Strafford and Laud during the reign of Charles I



/ ˈθʌrə /


  1. carried out completely and carefully

    a thorough search

  2. prenominal utter

    a thorough bore

  3. painstakingly careful

    my work is thorough

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Derived Forms

  • ˈthoroughly, adverb
  • ˈthoroughness, noun

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Other Words From

  • thor·ough·ly adverb
  • thor·ough·ness noun
  • qua·si-thor·ough adjective
  • qua·si-thor·ough·ly adverb
  • su·per·thor·ough adjective
  • su·per·thor·ough·ly adverb
  • un·thor·ough adjective
  • un·thor·ough·ly adverb

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Word History and Origins

Origin of thorough1

First recorded before 900; Middle English (preposition and adverb); Old English thuruh, variant of thurh through

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Word History and Origins

Origin of thorough1

Old English thurh; related to Old Frisian thruch, Old Saxon thuru, Old High German duruh; see through

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Example Sentences

Ars Technica has a thorough write-up of each issue, which you can check out as you download the new software.

Still, you’ll likely have to spend a bit more if you want to ensure thorough, quick, and predictable results from your toaster oven, which is usually half the reason for buying one at all.

Apple has a thorough support document on resetting your iPhone, which you should read before proceeding, just to ensure you’ve done everything necessary.

Witness, a nonprofit that uses video and technology to defend human rights, also has a thorough guide on how to save live video broadcasts.

Bellingcat, one of the most respected, thorough investigatory sites devoted to this purpose, has created a Google spreadsheet for images of suspects that need identifying.

The result was a thorough shellacking of the Democratic party from top to bottom.

Cammue, whose agency has now performed a thorough assessment of the current cremation process at Boystown, is extremely concerned.

In an attempt to offer up a thorough document, Brown manages to capture a wide array of people on camera.

The disease is spread via bodily fluids, necesitating strict isolation for the patients and thorough decontamination.

But Lear insists his longer, more detailed journeys are more thorough, experience-rich, and luxurious.

It was a difficulty foreseen long ago in Socialist discussions, but never completely met by the thorough-paced Communist.

The cultivation, though not always judicious, is generally thorough, there being no lack of hands nor of good will.

He told her he would probably spend the next day in bed for a thorough rest, and she agreed that that would be a very good idea.

English Agriculture has a thorough and cleanly aspect which I have rarely observed elsewhere.

Included was a twenty-page aside on the offending Bishop, revealing a startlingly thorough knowledge of his writings.


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