Late 19th century; earliest use found in George du Maurier (1834–1896), illustrator, cartoonist, and novelist. From French nounou, reduplication of nou-.
Definition of nounou in US English:
nounou
nounˈnuːnuː
rare
A nanny; a wet nurse.
Origin
Late 19th century; earliest use found in George du Maurier (1834–1896), illustrator, cartoonist, and novelist. From French nounou, reduplication of nou-.