IPA: /ˈsɒləmnəs/
KK: /ˈsɑləmnəs/
The state or quality of being serious and formal, often in a way that shows respect or gravity.
The solemnness of the ceremony made everyone feel the importance of the occasion.
Solemnness → It is formed from "solemn" (from Latin *solemnis*, meaning festive or ceremonial) and the suffix "-ness" (meaning the state or quality of). The word "solemnness" refers to the state or quality of being serious, formal, or dignified, often in a ceremonial context.
Think of the word 'solemn' which means serious or formal, and remember that 'solemnness' refers to the quality of being serious.