monumentally
adjective uk/ˌmɒn.jəˈmen.təl.i/ us/ˌmɑːn.jəˈmen.t̬əl.i/
（通常带负面意思）极端的
extremely (usually used when describing something in a negative way)
He stated that, in his opinion, this was a monumentally bad decision. 他声称，就他的观点，这是一个极为糟糕的决定。