1. full of, characterized by, or showing presumption or readiness to presume in conduct or thought, as by saying or doing something without right or permission.
  2. unwarrantedly or impertinently bold; forward.
  3. Obsolete. presumptive.

Origin of presumptuous

1300–50; Middle English < Late Latin praesūmptuōsus, variant of Latin praesūmptiōsus. See presumption, -ous
Related formspre·sump·tu·ous·ly, adverbpre·sump·tu·ous·ness, nouno·ver·pre·sump·tu·ous, adjectiveo·ver·pre·sump·tu·ous·ly, adverbo·ver·pre·sump·tu·ous·ness, nounun·pre·sump·tu·ous, adjectiveun·pre·sump·tu·ous·ly, adverbun·pre·sump·tu·ous·ness, noun
Can be confusedpresumptive presumptuous

Synonyms for presumptuous

Synonym study

1, 2. See bold.

Antonyms for presumptuous Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for over-presumptuous


  1. characterized by presumption or tending to presume; bold; forward
  2. an obsolete word for presumptive
Derived Formspresumptuously, adverbpresumptuousness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for over-presumptuous



mid-14c., from Old French presumtuex (12c.; Modern French présomptueux) and directly from Late Latin praesumptuosus, variant of praesumptiosus, from past participle stem of Latin praesumere "anticipate," in Late Latin, "assume" (see presumption). Related: Presumptuously; presumptuousness.

Online Etymology Dictionary, © 2010 Douglas Harper