thoroughness

[thur-oh-ngis, thuhr-]

noun

1. the quality of being painstakingly and comprehensively executed, without errors or omissions; the act or practice of executing tasks in this way.

   My old cookbook remains unmatched in the clarity and thoroughness of its explanations.

   They were greatly impressed by the FBI's speed and thoroughness.

2. completeness or perfection.

   I had my doubts about the thoroughness of his knowledge of the subject.

Other Word Forms

• superthoroughness noun
• unthoroughness noun

Word History and Origins

Origin of thoroughness¹

thorough ( def. ) + -ness ( def. )