Entry 1 sense Webster, 1913 Comprehensiveness · Com·pre·hen·sive·ness · IPA /kɑmpɹɪˈhɛnsɪvnəs/ 01 n. The quality of being comprehensive; extensiveness of scope. 1. The quality of being comprehensive; extensiveness of scope. “Compare the beauty and comprehensiveness of legends on ancient coins.” — Addison.