lord it over somebody
lord it over (one)
To assert arrogant superiority over one because of or in relation to some achievement, advantage, good fortune, etc. Haley has been lording it over me ever since she beat me out for the promotion.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
ˈlord it over somebody(disapproving) act as if you are better or more important than somebody: A good manager does not lord it over his or her team.
Farlex Partner Idioms Dictionary © Farlex 2017