What is another word for "solemn"?

Roget's Thesaurus (1911) lists these synonyms for "solemn": all, and, any, awful, better, could, dead, deathlike, doubt, drop, est, faint, feather, fool, grave, hear, hold, hush, inaudible, lull, might, more, muffle, musical, mute, muteness, muzzle, noiseless, not, one, pas, pax, peace, pin, plus, put, quiet, remove, render, shut.