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senior

noun [C] (HIGH RANK)
 
 
/ˈsiː.ni.ər/ US  /-njɚ/

Definition

someone who is high or higher in rank: It's important to impress your seniors if you want to be promoted.Position and status in groups and organizationsBosses, managers and directorsPeople in charge of or controlling other peopleImportant people and describing important peopleFamous peopleWealthy people
(Definition of senior noun (HIGH RANK) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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