reticence,-cy

reticence,-cy [ˈretisəns, -si] n.

1. ■ 沉默, 缄默; 寡言

2. ■ (艺术风格等的)含蓄, 严谨; 节制

His reticences are more revealing than his speech. 他的沉默所表露的胜过他的言词。