Solemn

Definitions: (1) serious <especially with religious reverence>; sacred; devout; pious; marked by veneration to God; (2) willing to be deeply earnest, very sincere <a solemn oath>

Synonyms: awe-inspiring, profound

Compatible Qualities: liturgical, prayerful, worshipful

Familial Qualities: humor, selflessness

Too Far: dour

Quote: Our errors are surely not such awfully solemn things. In a world where we are so certain to incur them in spite of all our caution, a certain lightness of heart seems healthier than this excessive nervousness on their behalf. ― William James (1842-1910) American Psychologist and Philosopher