everything
Even though "everything" refers to many things, it is grammatically singular. This means you should always use a singular verb with it (for example: "Everything is ready," not "Everything are ready"). When used as a noun to mean the most important thing, it often follows the verb "to be" to show deep emotional value or priority.
💬Casual Conversation
🎬Tuesday afternoon, Chloe is in a lecture hall while Karen is at the grocery store.
Karen Smith
Did you forget everything I told you about the laundry? The machine is still full.
Chloe Smith
I'm literally drowning in finals, mom. Chill.
💡
Karen is using 'everything' as a pronoun to refer to the total set of instructions she gave Chloe. Chloe responds with the hyperbole 'drowning in finals', a common student expression for being overwhelmed by work.