From Longman Dictionary of Contemporary Englishhigher-upˌhigher-ˈup noun [countable] informalHIGH POSITION OR RANK someone who has a high rank in an organization Rumour has it that the higher-ups want to push the schedule forward.
Examples from the Corpus
higher-up• Shelton was ordered by company higher-ups to reduce costs.From Longman Business Dictionaryhigher-upˌhigher-ˈup noun [countable] American English informal someone who has a high rank in an organizationSYNhigh-up BrERestaurant managers have been known to fill in customer comment cards themselves just to impress their higher-ups. 