Right?

Meaning: Am I correct?/Double-check.

Examples:

-The train leaves at 1pm, right? (True Meaning: Am I correct?/double-check.)

-Yes.

-Taxis are common in New York City, right? (True Meaning: Is it true?)

-Yes. But, these days, they are very expensive.

-(Angry) You made a big mistake!

-(Silent)

-Right?! (True Meaning: Speak!)

If I am explaining something, I say "right?" to double-check if you understand my explanation:

-Why do Japanese people eat so much fish?

-Well, Japan is an island, right? (True Meaning: Do you understand?)

-Right. (True Meaning: I understand.)

-So, fish is more affordable in Japan.