yes man

jees-mies puhekieltä A person who always agrees with his employer or superior.
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2003, Evan Thomas, "http://www.newsweek.com/id/58887/page/7 The 12 Year Itch," Newsweek, 21 Mar.:

Rice is a "yes man," says one former top government official. "She thinks her job is just to figure out what the president is trying to say and then to say it more articulately."