monoglot

[mon-uh-glot]
noun
  1. a person with a knowledge of only one language.

Origin of monoglot

First recorded in 1820–30; mono- + -glot
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for monoglot

monoglot

adjective
  1. having command of a single language
  2. written in, composed of, or containing a single language
noun
  1. a person with command of a single language

Word Origin for monoglot

C20: from mono- + Greek glōtta tongue
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