reticent

adj.

寡言少语的；有保留的；含蓄的；谨慎的

1. He is a reticent and modest man.
   他是个寡言少语、谦虚谨慎的人。
2. No one could elicit any response out of the reticent little girl.
   没有人能从那个沉默的小女孩身上套出任何回答。
3. He was reticent about his opinion.
   他有保留意见。
4. He seems unduly reticent on the subject of his past.
   他似乎对他过去的事情讳莫如深。
5. He was extremely reticent about his personal life.
   他对自己的个人生活讳莫如深。

The reticent object
Reticent poetics, queer politics
Discourse Characteristics of Reticent Children.
The reticent syndrome: Some theoretical considerations about etiology and treatment
Reticent behavior and experiences in peer interactions in Chinese and Canadian children.
Identifying Reticent Respondents: Assessing the Quality of Survey Data on Corruption and Values
Implementing a skills training program for reticent communicators
Combating Academic Fraud: Are Students Reticent about Uncovering the Covert?
Reticent primary grade children and their more talkative peers: Verbal, nonverbal, and self-concept characteristics.
Reticent behavior and experiences in peer interactions in Canadian and Chinese children. Developmental Psychology, 42, 656-665