/əˈkʌs.təmd/
If you are accustomed to something, you know it so well or have experienced it so often that it seems natural, unsurprising, or easy to deal with.
To familiarize someone with something.
You need to accustom the new interns to the layout of the building.
Seth will accustom you to this project before our next meeting.
Accustom yourself to the new software before we start using it more frequently.