Marvelous means wonderful, excellent, or amazing in a way that fills you with delight. When something is marvelous, it's so good it makes you stop and appreciate it. A marvelous sunset paints the sky in brilliant colors. A marvelous performance leaves the audience buzzing with excitement. Your grandmother might call your science project marvelous when you've clearly put real thought and effort into it.

The word carries a sense of genuine admiration. It's stronger than just “nice” or “good.” When you call something marvelous, you're saying it stands out, that it deserves special recognition. A violinist might give a marvelous concert, playing with such skill and feeling that everyone in the hall sits entranced.

Notice the connection to “marvel,” which means something that causes wonder or astonishment. When you marvel at something, you're experiencing that feeling of awe and appreciation. So marvelous describes things worthy of that reaction: a marvelous invention, a marvelous adventure, a marvelous discovery. The word suggests not just quality, but the joy and wonder that quality creates.