get back atsomeone
phrasal verbwithgetverbus/ɡet/present participlegetting|past participlegottenus/ˈɡɑt·ən/gotus/ɡɑt/
topunishsomeone because thatpersonhas done somethingwrongto you:
Ithinkhe’stryingto get back at her for what she said in themeeting.