To admit defeat, capitulate
Become fully taken over by a certain quality, activity, trait, &c.
To abandon (someone or something)
To relinquish (something)
To execute a trade on behalf of another broker.
To stop or quit (an activity, etc.)
To surrender (someone or something)
To lose hope concerning (someone or something)
To try to get one's horse into a better position during a horse race.
To try to come out ahead in a competition for something specific or put oneself in a more favourable position generally.