habit

an established custom

“it was their habit to dine at 7 every evening”

attire that is typically worn by a horseback rider (especially a woman's attire)

an automatic pattern of behavior in reaction to a specific situation; may be inherited or acquired through frequent repetition

“owls have nocturnal habits”

excessive use of drugs

a distinctive attire worn by a member of a religious order

put a habit on

the general form or mode of growth (especially of a plant or crystal)

“a shrub of spreading habit”