Top definition
Sub-species of human who speak a language that no longer exists. They also frequently use the word Nu(meaning still undetermined). Believed to have similar properties to the Neanderthal "grunt".
Two Yiddishians in conversation:

yiddishian 1 :Nu?
yiddishian 2 :Nu, nu.
yiddishian 1 :nu.
yiddishian 2 :nu.
by September 18, 2008
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