noun
See reticence in Webster's New World Roget's A-Z Thesaurus II
The keeping of one's thoughts and emotions to oneself:
control, reserve, restraint, self-control, self-restraint, taciturnity, uncommunicativeness. See restraintReserve in speech, behavior, or dress:
demureness, diffidence, modesty, self-effacement. See restraintLearn more about reticence