en

Do (someone) a disservice

ru

Translation do (someone) a disservice into russian

do (someone) a disservice
By not telling her the truth, you are doing her a disservice.
Не говоря ей правду, вы оказываете ей медвежью услугу.

Definitions

To harm or disadvantage someone by acting in a way that is not helpful or by providing poor advice or support.