Answer:
Accustomed
Explanation:
First, we need to know what customary means.
Define customary:
Ccommonly practiced, used, or observed customary acts of courtesy his customary enthusiasm.
Another word to say that is accustomed, habitual, wonted.
Usual isn't really another word to say that. At least you can't replace it when you say a sentence.
100% sure that accustomed is. Then habitual, then wonted.
