a person with some basic education who still falls short of a minimum standard of literacy or whose reading and writing skills are inadequate to everyday needs.
Origin of functional illiterate
First recorded in 1945–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a person whose literacy is insufficient for most work and normal daily situations
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