discreet

marked by prudence or modesty and wise self-restraint

• “his trusted discreet aide”
• “a discreet, finely wrought gold necklace”

unobtrusively perceptive and sympathetic

• “a discerning editor”
• “a discreet silence”

heedful of potential consequences

• “circumspect actions”
• “physicians are now more circumspect about recommending its use”
• “a discreet investor”