unaccustom

Make unfamiliar again

To unaccustom is to break a habit or make unfamiliar what was once routine—the reverse of accustom.

The word is rare, appearing mostly in older texts or formal writing: She sought to unaccustom herself from checking her phone every few minutes.

More commonly, speakers use phrases like "break the habit" or "wean off."

dishabituation

break

Interrupt continuity

discontinue · unlearn · deprogram · decondition · reset · withdraw · abstain · desensitize · estrange · alienate

adjustment

readjust

Modify something anew

acclimate · reacclimate · recalibrate · realign · change · shift · modify · alter · convert · transform

unfamiliarity

unfamiliar

Not previously known

novel · unknown · unused · unacquainted · unexposed · inexperienced · untried · untested · new · unversed

Opposites
habituation process

unaccustomaccustom

Make used to

habituate · familiarize · acclimate · acclimatize · condition

Family

unaccustomed

Familiarity
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Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G