To contradict; gainsay; go against; oppose; resist.(verb)
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Use "withsay" in a sentence
"He would withsay, nepertheloss, that is too me mean."
"Sir, he said, I might not withsay mine uncle's will and commandment."
"But I have opposed them, and think to withsay, for I have been steward of all Britain's land, and earl I am potent, unlike to my companions, and I have Welshland half part in my hand; more I have alone than the others all clean."