- 1sideline somebody to prevent somebody from playing in a team, especially because of an injury The player has been sidelined by a knee injury.
- 2sideline somebody to prevent somebody from having an important part in something that other people are doing The vice-president is increasingly being sidelined.
BrE BrE//ˈsaɪdlaɪn//; NAmE NAmE//ˈsaɪdlaɪn//[usually passive]Verb Forms present simple I / you / we / they sideline
BrE BrE//ˈsaɪdlaɪn//; NAmE NAmE//ˈsaɪdlaɪn//he / she / it sidelines
BrE BrE//ˈsaɪdlaɪnz//; NAmE NAmE//ˈsaɪdlaɪnz//past simple sidelined
BrE BrE//ˈsaɪdlaɪnd//; NAmE NAmE//ˈsaɪdlaɪnd//past participle sidelined
BrE BrE//ˈsaɪdlaɪnd//; NAmE NAmE//ˈsaɪdlaɪnd//-ing form sidelining
BrE BrE//ˈsaɪdlaɪnɪŋ//; NAmE NAmE//ˈsaɪdlaɪnɪŋ//