discreet
adjective uk/dɪˈskriːt/ us/dɪˈskriːt/
C2 审慎的，谨慎的，小心的
careful not to cause embarrassment or attract too much attention, especially by keeping something secret
The family made discreet enquiries about his background. 那家人小心翼翼地打听他的背景。
They are very good assistants, very discreet - they wouldn't go talking to the press. 他们都是很好的助手，非常谨慎——不会向新闻界透露什么的。
Opposite: indiscreet
Compare: circumspect
Note: Do not confuse with discrete.