counterargument

名词 counterargument:

1. an argument offered in opposition to another argument

coun.ter.ar.gu.ment

n.（名词）
An argument in opposition to another.
反论据：相反的回答或论据
Something that undermines an argument or deters someone from action:
反作用：使某论点变弱或使某人不采取行动的东西：
例句：
The students considered demonstrating for free elections, but their country`s secret police provided a powerful counterargument.
学生们考虑过为自由竞选而示威，但国家的秘密警察使他们不得不打消这个念头