Discreet or discrete:
Discreet means judicious, prudent, polite, civil, courteous.
Discrete means separate, individually distinct.
‘Jason was always discreet when anyone referred to his sister’s unfortunate propensity to dispense with her bikini at the drop of a hat; smiling and suggesting that she was merely trying to make her tan devoid of unsightly white lines and patches.’
‘Jenny divided the spoils of the morning’s bring and buy sale into discrete portions, nominating each for the individual charities represented.’