Marked by, exercising, or showing prudence and wise self-restraint in speech and behavior; circumspect.(adjective)
Free from ostentation or pretension; modest.(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 "discreet" in a sentence
"He's good at memorizing conversations, and some guys weren't so what you call discreet talking around him."
"Some areas for the ladies to consider: hair cut, color, makeup, shoes, purses, clothing, jewelry and certain discreet cultural factors."
"Years afterward, when she and Sharpton had become close friends, he recalled her discreet observation that he had lost weight and stopped wearing track suits."