This is the 1875th most frequent Spanish word.
in
The Spanish word "in" does not exist as a standalone word; you may mean "en," which translates to "in" or "on" in English, depending on context.
In this sentence, 'in' (translated as 'en' in Spanish) is used to denote location.
Ella está en la escuela.
She is in the school.
Here, 'in' expresses a point in time.
Comenzó a estudiar en 1985.
She began studying in 1985.
In this case, 'in' indicates position within a larger entity.