get the better of

[AterasDema]

win a victory over

[Williebit]

To overwhelm or overcome

[Marionaduant]

To gain an advantage over.

[ThomasSlege]

Get the better of is an idiomatic expression which generally means to beat, overcome, or gain an advantage over someone or something. This may be in a competition, a personal struggle, a game, or any situation that involves some form of contest or conflict. It may also refer to allowing ones emotions or weaknesses to affect ones judgement, thereby hampering ones performance or behavior.