Definition of root someone on in English:

root someone on

North American informal Cheer or spur someone on: his mother rooted him on enthusiastically from ringside
More example sentences
  • I was rooting him on, along with the others in his small but fervent peanut gallery.
  • And Spencer Tracy, he told me once, would visit the set of other movies being shot and root them on.
  • Your father, who had won a bronze medal in the Olympics in 1956, was one of those rooting you on.
See parent entry: root

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Pronunciation: ˈdeɪktɪk
denoting a word whose meaning depends on context...