This is the 1719th most frequent Spanish word.
útil
Useful.
Here, 'útil' is used as an adjective to describe the dictionary, expressing its usefulness for a task.
Este diccionario es muy útil para aprender nuevos idiomas.
This dictionary is very useful for learning new languages.
In this sentence, 'útil' is used to describe a person's behavior or intent, emphasizing a willingness to assist or be of service.
Siempre trato de ser útil ayudando a mis compañeros de trabajo.
I always try to be helpful by assisting my coworkers.
This usage of 'útil' refers to an object's functional advantage in facilitating a specific activity.