Definition of "undemonstrative" []

• Not disposed to expressions of feeling; reserved. (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.

• "Even when it is a practical, living thing that can be felt and built on, it is often almost cold-bloodedly inarticulate and undemonstrative, which is the only kind of sympathy acceptable to a man in trouble, especially a man of Druro's type, who did not want to discuss the thing at all, but just to take what was coming to him with a stiff lip."
• "Their son, John, who was ten at the time of his mother's first psychiatric hospitalization, found his father, the man who was then revered as "America's doctor," to be "undemonstrative" and someone who made him feel "judged, criticized, scared [and] beaten down.""
• "Clean-cut Hurts duo Theo Hutchcraft and Adam Anderson are aiming for a kind of undemonstrative Pet Shop Boys studiousness in their personal presentation, reflected in the well-manicured lines of their classy pop songs."