taciturnity
n. 沉默寡言; 默示
1. the trait of being uncommunicative; not volunteering anything more than necessary
It was only a substantial meal that could induce in him even a passing taciturnity.
只有实实在在的一顿饭才能使他暂时缄口无言.
His taciturnity was unbroken.
他一直缄默到底.