[adjective] - intentionally not attracting attention by noticeable behaviour or appearance, often in order to hide somethingMost church leaders have kept a discreet silence during this war.There were discreet signs of wealth all over the house.The family made discreet enquiries about his background.They asked me to be discreet when requesting the application form, "since we don't want everyone to ask".To be discreet is also to keep information secret or to share it with only a few trusted people.They are very good assistants, very discreet - they wouldn't go shouting to the press about anything they discovered while working for you.
DISCREET
Meaning of DISCREET in English
Cambridge English vocab. Кембриджский английский словарь. 2012