An indefinite pronoun replaces a non-specific noun. We use an indefinite pronoun when we don’t have a specific noun in mind. The word something is an indefinite pronoun.
I have something for you.
Can you pick up something to eat on your way home?
In each sentence, the reader does not know exactly what object is being mentioned. The pronoun is indefinite.
Use the word something as an indefinite pronoun.
It’s your turn. Write a sentence using the pronoun something.