This is the 7088th most frequent Catalan word.
acostumat
Accustomed.
Here, "acostumat" is used in its present participle form to indicate a state of being accustomed to something, referring to habitual action or familiarity.
Estic acostumat a viure a la ciutat.
I am used to living in the city.
In this case, "acostumat" is used in the past tense form to describe a prior state of being unaccustomed to or unfamiliar with a condition.
No estaves acostumat al clima fred, oi?
You weren't used to the cold climate, were you?
Here, "acostumat" is in the context of a future intention, describing the process by which someone becomes accustomed to a new situation or condition.