Mid 18th century; earliest use found in Horace Walpole (1717–1797), author, politician, and patron of the arts. From Scotch + -ery. Compare earlier Scottishness.
Definition of Scotchery in US English:
Scotchery
nounˈskɒtʃ(ə)ri
rare
Scottish characteristics; Scottishness.
Origin
Mid 18th century; earliest use found in Horace Walpole (1717–1797), author, politician, and patron of the arts. From Scotch + -ery. Compare earlier Scottishness.