Brush (someone) off

Translation of "brush (someone) off" into Russian

отмахнуться от (кого-то)

She tried to talk to him, but he just brushed her off.

Она пыталась поговорить с ним, но он просто отмахнулся от неё.

To dismiss or ignore someone in a casual or rude manner, often to avoid engaging with them or addressing their concerns.