English

Noun

momnesia ‎(uncountable)

1. (colloquial, humorous) Forgetfulness in a pregnant woman or mother.
   • 2009, Lisa T. Bergen, Life on Planet Mom: A Down-to-Earth Guide to Your Changing Relationships, Revell (2009), ISBN 9781441204042, page:

     It's difficult when we're young mothers—in the throes of momnesia, barely able to remember where we're supposed to be in two minutes (let alone two days)—to plan time for, much less seriously think about, our relationships.

   • 2011, Jena Pincott, Do Chocolate Lovers Have Sweeter Babies?: The Surprising Science of Pregnancy, Free Press (2011), ISBN 9781439183342, page 192:

     The mystery is that if our hippocampus, like that of mother rats, shows signs of new growth, why do we get momnesia? Why do we forget to pay the bills and return calls?

   • 2011, Alison Sweeney (with Christie Matheson), The Mommy Diet, Gallery Books (2011), ISBN 9781439180952, page 35:

     Just chalk it up to “momnesia” and write things down when you really need to remember them.

Synonyms

• baby brain, mommy brain