gainsaid

No one could gainsay the evidence presented in court.

用法提示：这里 gainsay 作为及物动词，表示“否定”或“反驳”，用于正式语境。

She gainsays every suggestion he makes, which frustrates the team.

用法提示：gainsay 在这里表示持续性地反对或反驳。

There is no gainsaying the fact that climate change is real.

用法提示：gainsaying 前面有 no，构成固定表达“无可否认”，表示不容反驳。