lord it over(to behave as if one is in control of; to make a display of having an advantage over or superiority to) verb [UK: lɔːd ɪt ˈəʊv.ə(r) ˈsʌm.bə.di] [US: ˈlɔːrd ˈɪt ˈoʊv.r̩ ˈsʌm.ˌbɑː.di]
put on airs(become haughty, assume a haughty manner) verb [UK: ˈpʊt ɒn eəz] [US: ˈpʊt ɑːn ˈerz]