masters UK /ˈmɑːs.təz/US /ˈmæs.tɚz/noun 3adjective 1phrases 1 noun3 •the next university degree after a first one, usually taking a year or two of further study •Ellipsis of master's degree. •A person holding a master's degree, as a title. adjective1 •Of or pertaining to a league or competition limited to players above a certain age or level of experience. Phrases with masters serve two mastersTo take orders from two superiors or two conflicting parties.