thoroughgoing
Americanadjective
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doing things thoroughly.
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carried out to the full extent; thorough.
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complete; unqualified.
a thoroughgoing knave.
adjective
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extremely thorough
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(usually prenominal) absolute; complete
thoroughgoing incompetence
Other Word Forms
Etymology
Origin of thoroughgoing
Explanation
Anything thoroughgoing is comprehensive — it pays extremely careful attention to details. Your thoroughgoing research most likely involved endless hours of sifting through multiple sources. A thoroughgoing paint job will be neatly edged and precisely done, and a thoroughgoing government reform will involve a huge, involved overhaul of the system. This adjective has an old-fashioned sound these days, when thorough usually works just as well. Both words come from the Old English þuruh, "from end to end and side to side."
Vocabulary lists containing thoroughgoing
30 GRE Words Beginning with "T" "U" "V" and "W"
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Twelve Years a Slave
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Merz also said it was "unacceptable" to add 2,500 new jobs at EU institutions and urged a "thoroughgoing reduction in bureaucracy".
From Barron's ● Aug. 27, 2026
“The Bloody Crossroads,” published in 1987, isn’t the kind of book you expect a journalist to write: a collection of perceptive, thoroughgoing literary essays on important writers from Henry Adams to Alexander Solzhenitsyn.
From The Wall Street Journal ● Dec. 26, 2025
In 1976, Biden, then 33, was a thoroughgoing Jimmy Carter Democrat.
From Los Angeles Times ● Feb. 26, 2023
On the one hand, he was a thoroughgoing modernist.
From Washington Post ● Jan. 14, 2023
Unlike the viruses, they are not thoroughgoing parasites.
From "Cosmos" by Carl Sagan
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
