root for somebody phrasal verbphr v informal a) SUPPORT A TEAM OR PLAYERto want someone to succeed in a competition, test, or difficult situation 给〔参赛者、应试者或处境困难的人〕支持；鼓励；声援 You can do it – I’m rooting for you. 你行的——我支持你。
b) especially American EnglishAmESUPPORT A TEAM OR PLAYER to support a sports team or player by shouting and cheering 为〔参赛队或运动员〕欢呼[喝彩，加油] the Los Angeles fans rooting for the Lakers 为湖人队喝彩加油的洛杉矶球迷
→ root for somebody at root2(3)