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Definition of thoroughness
thoroughness
/ˈθɝː.oʊ.nəs/
thor · ough · ness
Adverb:thoroughly
•Adjective:thorough
thoroughness Lexical Profile
CEFR
B2
Grade
8
Tier
2
Usage
Top 10k
Syllables
3
thoroughness Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
The quality or state of being complete and attentive to every detail; great care and precision in executing a task or inquiry.
Example
"The lead researcher was praised for the thoroughness of her data analysis and documentation."
Synonyms
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View all antonyms for thoroughness• Rhymes for thoroughness
• Nearby Words
Word Origin & Etymology
Formed in the 17th century from the adjective 'thorough'—originally an emphatic variant of the Middle English preposition 'through', from Old English 'thuruh'—combined with the abstract noun suffix '-ness'.
Cite this Entry
Wordmom. (2026). Definition of Thoroughness. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/thoroughness