ETYMOLOGY
from Latin menti-, mens (mind) + mutation
EXAMPLE
“…I..shall be allowed the full benefit of all the..illaqueations, extrications,..mentimutations, rementimutations,..that I..can devise…”
From: Discolliminium: Or, A Most Obedient Reply to a Late Book, Called, Bounds & Bonds, So Farre as Concerns the First Demurrer and No Further
By Nathaniel Ward, 1650
Lexicophilia 