- The definition of presumptuous is taking things for granted or being overconfident.
An example of presumptuous is assuming that you will win the city wide spelling bee just because you scored 100% on your last spelling quiz.
Origin: Middle English from Old French presunteux from Late Latin praesumptuosus from Classical Latin praesumptus: see presumption
Used by arrangement with John Wiley & Sons, Inc.
Origin: Middle English, from Old French presumptueux, from Late Latin praesūmptuōsus, variant of praesūmptiōsus, from praesūmptiō, presumption; see presumption.
- pre·sumpˈtu·ous·ly adverb
- pre·sumpˈtu·ous·ness noun