Solemn
King James Dictionary [1]
Solemn, a. sol'em. L. solennis, form soleo, to be accustomed, to use, that is, to hold on or continue, as we have wont.
1. Anniversary observed once a year with religious ceremonies. The worship of this image was advanced and a solemn supplication observed every year. I doubt the correctness of this definition of Johnson or whether solemn, in out language, ever includes the sense of anniversary. In the passage cited, the sense of anniversary is expressed by every year, and if it is included in solemn also the sentence is tautological. I should say the, that solemn in this passage of Stillingfleet, has the sense given in the second definition below. 2. Religiously grave marked with pomp and sanctity attended with religious rites. His holy rites and solemn feasts profan'd. 3. Religiosly serious piously grave devout marked by reverence to God as solemn prayer the solemn duties of the sanctuary. 4. Affectiong with seriousness impressing or adapted to impress seriousness, gravity or reverence sober serious. There reign'd a solemn silence over all. To 'swage with solemn touches troubled thoughts. 5. Grave serious or affectedly grave as a solemn face. 6. Sacred enjoined by religion or attended with a serious appeal to God as a solemn oath. 7. Marked with solemaities as a solemn day.
Webster's Dictionary [2]
(1): ( a.) Pertaining to a festival; festive; festal.
(2): ( a.) Stately; ceremonious; grand.
(3): ( a.) Marked with religious rites and pomps; enjoined by, or connected with, religion; sacred.
(4): ( a.) Fitted to awaken or express serious reflections; marked by seriousness; serious; grave; devout; as, a solemn promise; solemn earnestness.
(5): ( a.) Real; earnest; downright.
(6): ( a.) Affectedly grave or serious; as, to put on a solemn face.
(7): ( a.) Made in form; ceremonious; as, solemn war; conforming with all legal requirements; as, probate in solemn form.