disaccustom

[ dis-uh-kuhs-tuh m ]
/ ˌdɪs əˈkʌs təm /

verb (used with object)

to cause to lose a habit: In the country I was quickly disaccustomed of sleeping late.

Origin of disaccustom

1475–85; < Anglo-French desacustumer; Middle French, Old French. See dis-1, accustom

British Dictionary definitions for disaccustom

disaccustom
/ (ˌdɪsəˈkʌstəm) /

verb

(tr usually foll by to) to cause to lose a habit