An incredulous person is someone who is extremely skeptical or disbelieving, often because what they're being told seems too amazing or unbelievable.
When people use the word "incredulous" in everyday conversation, it usually means that they're reacting with shock or doubt to something surprising. Imagine hearing a friend tell you that they won a huge lottery jackpot - at first, you might be incredulous, thinking it's just not possible. Or maybe someone tells you about an amazing coincidence that happened to them - again, you'd probably feel incredulous until you hear the whole story. This is especially common when people are sharing incredible or unbelievable news, like winning a big award or meeting their favorite celebrity.
Skeptical, disbelieving, or unable to believe.
