Someone who is reticent does not tell people about things.
例句
She is so reticent about her achievements...她对自己的成就缄口不言。Mrs. Smith, normally a reticent woman, took it upon herself to write to the President.通常都很沉默的史密斯夫人决定自己给总统写信。
英汉词典释义
n.
不轻易暴露想法或感情;沉默,缄默
His reticence is more revealing than his speech.他的沉默所表露的要胜过他的言词。He breaks out of his normal reticence and tells me the whole story.他打破了平时一贯沈默寡言的习惯,把事情原原本本都告诉了我。
英英词典释义
Noun
1. the trait of being uncommunicative; not volunteering anything more than necessary