- It's a clipping of "e" from "enough." The spelling has likely been changed to avoid confusion, as "ough" has so many possible sounds. It borrows the spelling of rhyming "stuff." It's almost exclusively used in "nuff said."
nuff
clipping; adjective
Enough; as much as needed
Etymology : Enough from Old English genog
Source : "Nuff said." (Facebook meme 10/21/2013)
Last modified: 12 December 2013