Answer:

custom

Answer	Crossword Clue
CUSTOM	Habitual practice
CUSTOM	Tipping, e.g.
CUSTOM	Anthropologist's concern

CUSTOM	Made-to-order
CUSTOM	Standard practice
CUSTOM	Usual practice
CUSTOM	Usual procedure
CUSTOM	Way it's done
CUSTOM	Force of habit
CUSTOM	Accepted practice
CUSTOM	Traditional exercise

CUSTOM	Convention
CUSTOM	Bespoke
CUSTOM	Habit.
CUSTOM	Practice.
CUSTOM	Usage
CUSTOM	Habit
CUSTOM	Removing one's hat in an elevator, e.g.
CUSTOM	Wont

CUSTOM	Like modified instrument
CUSTOM	To specs