Discreet

adj.thoughtful, kindprofessional

What it means

Careful not to expose private information, attract needless notice, or cause embarrassment.

Reach for it when praising tactful restraint where trust or privacy matters

A discreet receptionist moved the conversation away from the crowded desk.

playful
low-key
when informal understatement and little attention are desired
not when Low-key does not promise respect for sensitive information.
everyday
subtle
when the action should avoid obvious attention
not when Subtlety can be aesthetic or manipulative and says nothing about trust.
warm
tactful
when protecting another person's feelings guides the choice
not when Tact may soften public words without keeping anything private.
professional
confidential
when information is formally restricted
not when Confidential describes the material or duty, not a person's unobtrusive manner.
formal
circumspect
when careful judgment weighs possible consequences
not when Circumspection is broader and can look hesitant rather than discreet.
literary
reserved
when a person avoids revealing feelings or opinions
not when Reserve may come from shyness, not considerate judgment.

discreet inquiry
A discreet inquiry confirmed the need without naming the family.
discreet manner
His discreet manner reassured clients entering the advice center.
remain discreet
Please remain discreet until every applicant has been informed.

The definition and the example on this page are written here. The dictionaries above ground which meaning is being described, not the wording.