VERB
(计划)起反作用,使自食其果
If a plan boomerangs, its result is not the one that was intended and is harmful to the person who made the plan.
例句
The trick boomeranged, though...
然而这个花招竟害了自己。
He risks defeat in the referendum which he called, but which threatens to boomerang against him.
他冒着失败的危险进行他所谓的“公投”,但这恐怕会反过来对他不利。