anything

pronoun: any object, event, idea, or matter at all (used especially in questions, negatives, and conditionals)
- Do you need anything from the store?
pronoun: whatever thing; no matter what (used to express unlimited choice or willingness)
- She would do anything to help her family.
pronoun: something of an unspecified kind when the exact identity is unimportant
- If anything changes, let me know.