1) French word used in English 1) Wean 
• (v. t.) To destroy the force of habit in; to wean from a custom.
Dis`ac·cus'tom transitive verb [ Confer French désaccoutumer .] To destroy the force of habit in; to wean from a custom. Johnson. 
to cause to lose a habit: In the country I was quickly disaccustomed of sleeping late.