# thorough

Pronunciation: US say "THUR-oh" /ˈθʌɹoʊ/; UK say "THUR-uh" /ˈθʌɹə/

## Adjective

1. Carefully done so that no detail is overlooked or left out.
   - Simple: Done carefully and completely, with attention to every small detail.
   - _The auditor's thorough review uncovered errors that others had missed._
   - _Detectives carried out a thorough search of the abandoned property._
2. Complete and absolute; total in extent or degree.
   - Simple: Full and complete, with nothing missing or held back.
   - _The new policy was a thorough failure that pleased no one._
   - _She made a thorough fool of him in front of the whole office._

## Preposition

3. Through; passing from one side or end of something to the other. *(archaic)*
   - Simple: Through, going from one side or end of something to the other.

## Other meanings

- (noun) A furrow between two ridges of ground, cut to drain off surface water.

## Origin

From Middle English thoruȝ, from Old English þuruh, a byform of Old English þurh, which is also the source of English "through." The adjective comes from the preposition and adverb, and the word developed its longer, syllabic form when it was fully stressed as an adverb, adjective, or noun.

Source: DictionaryAI, https://dictionaryai.com/define/thorough (written from Wiktionary data, CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/).