accustom

verb

1. (transitive)To make familiar by use; to cause to accept; to habituate, familiarize, or inure.

   “Early exposure to pet allergens and pet-related bacteria accustoms the body to allergens.”

   “I shall always fear that he who accustoms himself to fraud in little things, wants only opportunity to practice it in greater.”

   ““[…] it is not fair of you to bring against mankind double weapons ! Dangerous enough you are as woman alone, without bringing to your aid those gifts of mind suited to problems which men have been accustomed to arrogate to themselves.””

   “Although it might be thought that drivers would naturally refer constantly to the speedometer, older drivers who come to diesel driving after years of steam experience without the help of speedometers, as well as those on steam engines which have been equipped with speedometers in recent years, have not accustomed themselves to the constant use of this instrument.”

   “He took it [a television] back to his unfurnished room and began watching as much as he could, including Ms. Winfrey’s show, to accustom his ear to hearing English.”

2. (intransitive, obsolete)To be wont.

   “all of them accustoming , once in the year , to take their kind of the fresh water”

3. (intransitive, obsolete)To cohabit.

   “Much better do we Britans fulfill the work of Nature than you Romans; we with the beſt men accuſtom op'nly; you with the baſest commit private adulteries.”

noun

1. (obsolete)Custom.