idiomto be thepersonwho makes all thedecisionsin agroup:当家作主;主宰;支配一切In thatfamilyit is thegrandmawhorulestheroost.那个家庭是奶奶当家。SMART Vocabulary: related words and phrasesControlling and being in charge
aggrandize
assume
assumption
authoritative
authoritatively
commanding
dictate
guiding principle
harness
have (got)someoneby the short and curliesidiom
havesomeoneby the ballsidiom
havesomeoneeating out ofyourhandidiom
helm
override
plenipotentiary
police
policing
possess
power play
skipper
See more results ?(Definition ofrule the roostfrom theCambridge Advanced Learner's Dictionary & Thesaurus? Cambridge University Press)#https://dictionary.cambridge.org//dictionary/english/rule-the-roost##