noun, plural no-nos, no-no's. Informal.
Origin of no-no
Examples from the Web for nono
Historical Examples of nono
"He's bitterly hurt this time, Nono," said her aunt, gently.The Beloved Woman
Nono, I cantnot now; perhaps in a few months time, but not now.Girls of the True Blue
L. T. Meade
Nono; he considers that mystery adds to his strong hold upon me.Married Life
John Baldwin Buckstone
You could hug Nono and tell her secrets and what you wanted for luncheon.Mr. Achilles
(118b, 1), but with the alteration: Nono anno ab inceptione religionis.Life of St. Francis of Assisi
1942, from reduplication of no.