customary
adjectiveUK /ˈkʌstəməri/
US /ˈkʌstəmeri/
Something customary is what people usually do.
It is customary to say thank you when someone helps you.
OTHER MEANINGS
2. Done because it is the normal or expected way.
She gave her customary smile when she walked in.
3. Based on a long-standing practice or tradition.
The customary greeting in that village is a friendly wave.
4. Legally accepted because it has been done for a long time.
The customary right to cross the field was respected by everyone.