solemn

adj.

[1]	serious , grave , sedate , sober , reserved , sober , grave , earnest , sedate , staid , taciturn , morose , morbid , mirthless , unsmiling , gloomy , sombre , grim , glum , long-faced , saturnine
[2]	ceremonial , earnest , sincere , ritualistic , liturgical , religious , ecclesiastical , holy , divine , sacred , hallowed , sacramental , reverential , devotional
[3]	ceremonious , ritual , formal , dignified , stately , grand , august , imposing , impressive , awe-inspiring , awesome , important , momentous