accustom
verb
°To make familiar by use; to cause to accept; to habituate, familiarize, or inure; -- with to.
"ca. 1753: I shall always fear that he who accustoms himself to fraud in little things, wants only opportunity to practice it in greater. - John Hawkesworth et al., Adventurer"
°(obsolete) To be wont.
noun
°(obsolete) custom.
synonyms: habituate, used to, inure, exercise more» , train