Not disposed to be communicative. See Synonyms at silent.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "uncommunicative" in a sentence
"'uncommunicative' style meant as no more than a pleasant aural accompaniment to whatever other activity we are pursuing, the purpose of serious music is that it should be heard with attention; some 'meaning' heard in it."
"The emotional damage they suffered had left them moody, uncommunicative and sometimes violent."
"I had the same trouble with Brian; I had so much trouble getting inside his head because I was too busy seeing him through D.J. Curiously, I've received a lot of criticism from readers about how passive and uncommunicative D. J.'s mother is."