Indefinite Pronoun is a pronoun that does not refer to any person, amount or thing in particular… e.g. anything, something, anyone, and everyone.
My father read every book on the shelf.
EVERYONE AND NO ONE
Notice that in the following expressions the verb is singular.
Every (boy) likes plenty of food.
Every body eats plenty of food.
No body wants plenty of food.
Everyone wants plenty of food.
No one wants plenty of food.
EVERYONE is used when speaking of persons and use EVERYTHING when referring to things. Both words are followed by a singular verb.
ANYTHING, SOMETHING and ANYONE
You can take anything from this shop.
Eating anything is not a good habit.
Anything that you get is not will give you your future.
Something is better than nothing.
Anyone can come forward to solve this issue.