坚决反对…
to be completely opposed to something
He's dead set against living in the city. 他坚决反对住在城里。
UK You won't be able to change his mind - he's dead against the plan. 你不可能改变他的想法——他坚决不同意这个计划。
I'd like Millie to go back to college but she's dead set against the idea.
They are dead set against any form of legislation.
UK Sam is dead against anything that requires further investment.
I'd expressed an interest in finding my birth parents but my adoptive mother was dead set against it.
See also: dead adjective adverb