to do exactly what an enemy, opponent, etc. wants so that they gain the advantage in a particular situation :
If we get the police involved, we'll be playing right into the protesters' hands.
to do exactly what an enemy, opponent, etc. wants so that they gain the advantage in a particular situation :
If we get the police involved, we'll be playing right into the protesters' hands.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005