reticent

/ˈrɛtɪsənt/
adjective
  1. Not willing to speak freely or share thoughts and feelings; reserved or quiet.
    • He remained reticent during the meeting, even when asked for his opinion.
    • She was reticent about her past, preferring to listen rather than talk.
    • The usually reticent student surprised everyone by giving a passionate speech.
  2. Reluctant or hesitant to do something, especially to reveal information.
    • The company was reticent to release the financial report early.
    • The witness was reticent to provide details about the accident.
    • Many people are reticent to discuss their salaries with coworkers.
What does "reticent" mean? | whatsthatwordmean | whatsthatwordmean