[ pri-zuhmp-shuhn ]
/ prɪˈzʌmp ʃən /


Origin of presumption

1175–1225; Middle English: effrontery, supposition < Latin praesūmptiōn- (stem of praesūmptiō) anticipation, supposition, Late Latin: presumptuousness, equivalent to praesūmpt(us) (past participle of praesūmere to undertake beforehand; see presume) + -iōn- -ion

Related forms

o·ver·pre·sump·tion, noun

Can be confused

assumption axiom premise presumption Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for presumption

British Dictionary definitions for presumption


/ (prɪˈzʌmpʃən) /


the act of presuming
bold or insolent behaviour or manners
a belief or assumption based on reasonable evidence
a ground or basis on which to presume
law an inference of the truth of a fact from other facts proved, admitted, or judicially noticed

Word Origin for presumption

C13: via Old French from Latin praesumptiō a using in advance, anticipation, from praesūmere to take beforehand; see presume
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