expression
without giving a chance to object; peremptorily; forcibly
Used when someone acts decisively, not allowing the other party to say yes or no. Often implies a forceful or high-handed manner.
彼は有無を言わせず私の腕をつかんで連れて行った。
He grabbed my arm and dragged me away without giving me a chance to object.
The boss ordered overtime without allowing any argument.