really >> /ˈri(ə)li/
Definition: [adverb] In actual fact, as opposed to what is said or imagined to be true or possible.
Example: so what really happened?
Definition: [adverb] Very; thoroughly.
Example: I think she's really great
Definition: [exclamation] Used to express interest, surprise, or doubt.
Example: “I've been working hard.” “Really?”