From Longman Dictionary of Contemporary Englishroot for somebody phrasal verb informal1 SUPPORT A TEAM OR PLAYERto want someone to succeed in a competition, test, or difficult situation You can do it – I’m rooting for you.2 especially American EnglishSUPPORT A TEAM OR PLAYER to support a sports team or player by shouting and cheering the Los Angeles fans rooting for the Lakers → root→ See Verb table
