'Thoroughness' definitions:

Definition of 'thoroughness'

(from WordNet)
noun
Conscientiousness in performing all aspects of a task

Definition of 'Thoroughness'

From: GCIDE
  • Thoroughness \Thor"ough*ness\, n. The quality or state of being thorough; completeness. [1913 Webster]

Synonyms of 'thoroughness'

From: Moby Thesaurus