accustom to

accustom someone to someone or something

to get someone used to someone or something. I think we can accustom Fred to the new rules without difficulty.

accustom to

v.
To bring someone or something into a condition that is harmonious with something else, especially through repeated experience: I have accustomed myself to waking up at dawn. They are not accustomed to such formal clothing.
References in periodicals archive ?
I would recommend this book to all types of readers, even those who aren't accustom to reading poetry.