See syn. study at
Commonly practiced or used
Familiar through repetition
In the habit
Obviously he was accustomed to socializing on a high level.
You will have to be more careful until you are accustomed to your strength.
Not accustomed to the rules of this world?
He was accustomed to hearing and safeguarding the secrets of others.
She wasn't accustomed to anyone taking the time to think of her.