innumerate

[ih-noo-mer-it, ih-nyoo-]
noun
  1. an innumerate person.

Origin of innumerate

First recorded in 1959; in-3 + numerate
Related formsin·nu·mer·a·cy, noun
Can be confusedilliterate innumerateinnumerable innumerate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for innumeracy

innumerate

adjective
  1. having neither knowledge nor understanding of mathematics or science
noun
  1. an innumerate person
Derived Formsinnumeracy, 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