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.