Meaning

• In a way or manner that is real, not unreal.

• (modal) Actually; in fact; in reality.

  ""He really is a true friend." / "Really? What makes you so sure?""

• (as an intensifier) Very (modifying an adjective); very much (modifying a verb).

  "But ma, I really, really want to go to the show!"

Meaning

• Indicating surprise at, or requesting confirmation of, some new information; to express skepticism.

  "A: He won the Nobel Prize yesterday."

• (sarcastic, typically exaggerated question.) Indicating that what was just said was obvious and unnecessary; contrived incredulity

  "A: I've just been reading Shakespeare - he's one of the best authors like, ever!"

• Indicating affirmation, agreement.

  "A: That girl talks about herself way too much."

• Indicating displeasure at another person's behaviour or statement.

  "Well, really! How rude."