Uncommunicative
ahd-5
adjective.
Not disposed to be communicative.
adjective.
Characterized by reserve or a lack of expression.
The Century Dictionary and Cyclopedia
Not communicative or disposed to impart one's wealth; not liberal; parsimonious.
Not communicative; not disposed to impart one's thoughts; not free to communicate to others; reserved; taciturn.
Wiktionary, Creative Commons Attribution/Share-Alike License
adjective.
Tending not to
communicate
; not communicating.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
not inclined to talk or give information or express opinions