1. the quality of being extremely impressive, excellent, or outstanding
Usage: informal
2. the quality of inspiring awe or wonder

Examples

• The awesomeness of the Grand Canyon left us speechless.
• She was amazed by the sheer awesomeness of the concert performance.
• The awesomeness of the mountain range inspired many artists.
• His friends couldn’t stop talking about the awesomeness of his new skateboard tricks.
• The awesomeness of the thunderstorm was both beautiful and frightening.
• They were overwhelmed by the awesomeness of standing before the ancient cathedral.