word of negation or refusal, "no" as a reply to a question, late 12c., from a Scandinavian source such as Old Norse nei, compound of ne "not" (from PIE root *ne- "not") + ei "ever," from Proto-Germanic *aiwi-, extended form of PIE root *aiw- "vital force, life; long life, eternity."
the nays have it
each of us is peculiar, nay, in a sense unique
navigation
navigational
navigator
navvy
navy
nay
naysayer
Nazarene
Nazareth
Nazi
Nazism
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