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English definition of “sideline”

sideline

verb [T]     /ˈsaɪdlaɪn/
to stop someone from being included in an activity that they usually do, especially a sport : [often passive] He's broken his ankle and could be sidelined for weeks .Of little or less importanceNeglecting and ignoringNot paying attentionTreating as unimportant
(Definition of sideline verb from the Cambridge Learner's Dictionary © Cambridge University Press)

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