'innumerate' definitions:

Definition of 'innumerate'

(from WordNet)
adjective
Lacking knowledge and understanding of mathematical concepts and methods [ant: numerate]

Definition of 'innumerate'

From: GCIDE
  • innumerate \innumerate\ adj. Lacking knowledge and understanding of mathematical concepts and methods; by analogy with illiterate. Opposite of numerate. Also See: educated; illiterate. [WordNet 1.5]