drop out -
withdraw from established society, especially because of disillusion with conventional values; "She hasn't heard from her brother in years--he dropped out after moving to California"
drop out give up in the face of defeat of lacking hope; admit defeat; "In the second round, the challenger gave up"
retire,
withdraw cause to get out; "The pitcher retired three batters"; "the runner was put out at third base"
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= antonym
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Wiktionary
Verb
drop out -
Prematurely and voluntarily leave school, a race, or the like.