Solemnity is the quality of being serious, dignified, and respectful, especially during important or meaningful moments. When a graduation ceremony has an air of solemnity, people speak quietly, listen carefully, and recognize the significance of what's happening. A memorial service has solemnity because people honor someone's memory with reverence and respect.

The word suggests a certain gravity or weightiness. When a judge speaks with solemnity, her tone and manner show she understands the importance of her decisions. When friends make a promise with solemnity, they're not joking around: they mean what they say and want the other person to know it.

Solemnity doesn't mean sadness, though solemn occasions can be sad. A wedding has solemnity because two people are making life-changing promises, but it's also joyful. A swearing-in ceremony for a new president has solemnity because the moment carries enormous responsibility.

You can feel solemnity in a hushed courtroom, in the quiet moment before a performance begins, or when someone delivers important news. The atmosphere of solemnity tells everyone present: this moment matters. Pay attention and show respect.