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.
只有實實在在的一頓飯才能使他暫時緘口無言.
His taciturnity was unbroken.
他一直緘默到底.