performed or uttered with sincerity, esp so as to be legally binding
a solemn oath
marked by the observance of established form or ceremony; specif celebrated with full religious rites
marked by seriousness and sobriety
sombre; gloomy
conveying a deep sense of reverence or exaltation
stirred by the solemn music
solemnly adv
solemnness noun
[Middle English solemne via Old French from Latin sollemnis ceremonial, customary, from sollus whole]