a faculty or facility for forgetting; faulty memory: a witness with a very convenient forgettery.
Origin of forgettery
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for forgettery
Historical Examples of forgettery
Every day for a week, he had to spend an hour in the "forgettery."
Not one of the other children had had to use it, so it began to be called "Donald's forgettery."