"Real" is an adjective meaning genuine, authentic, or actual. It signifies that something is not a copy, imitation, or illusion.
Here are some examples:
* "That's a real diamond, not a fake." This means the diamond is authentic, not a copy.
* "She had a real problem with her boss." This means her problem was genuine and serious, not imagined.
* "We're in real trouble now." This means the trouble is significant and not a minor issue.
Let me know if you had a specific context in mind, and I can clarify further.