reticence

n.

不轻易暴露想法或感情；沉默；不爱说话；含蓄

1. His reticence is more revealing than his speech.
   他的沉默所表露的要胜过他的言词。
2. It was impossible to break through her barricade of reticence.
   要打破她沉默的壁垒简直是不可能的。

Reticence and Anxiety in Second Language Learning
Scientific reticence and sea level rise
Asian students' reticence revisited
Reticence in second language case discussions: anxiety and aspirations
Computational reticence: why women fear the intimate machine
Scientific reticence and sea level rise. Environ Res Lett 2:024002
NONVERBAL AND RELATIONAL COMMUNICATION ASSOCIATED WITH RETICENCE
Case-based learning and reticence in a bilingual context: perceptions of business students in Hong Kong
Infection Breeds Reticence The Effects of Disease Salience on Self-Perceptions of Personality and Behavioral Avoidance Tendencies
Silence speaks volumes: The effectiveness of reticence in comparison to apology and denial for responding to integrity- and competen...