Someone who is reticent does not tell people about things.
例句
She is so reticent about her achievements...她對自己的成就緘口不言。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決定自己給總統寫信。
英漢詞典釋義
n.
不輕易暴露想法或感情;沉默,緘默
His reticence is more revealing than his speech.他的沉默所表露的要勝過他的言詞。He breaks out of his normal reticence and tells me the whole story.他打破了平時一貫沈默寡言的習慣,把事情原原本本都告訴了我。
英英詞典釋義
Noun
1. the trait of being uncommunicative; not volunteering anything more than necessary