adj.1 serious and dignified (a solemn occasion).
2 formal; accompanied by ceremony (a solemn oath).
3 mysteriously impressive.
4 (of a person) serious or cheerless in manner (looks rather solemn).
5 full of importance; weighty (a solemn warning).
6 grave, sober, deliberate; slow in movement or action (a solemn promise; solemn music).
Phrases and idioms:
solemn mass high mass (see MASS(2)).
Derivatives:
solemnly adv. solemness n.
Etymology: ME f. OF solemne f. L sol(l)emnis customary, celebrated at a fixed date f. sollus entire