solemn
UK: ˈsɒləm | US: ˈsɑːləm
adj. formal and dignified; serious
adj. characterized by deep sincerity
adj. (archaic) performed with religious or ceremonial reverence
Derived from Latin sollemnis ("annual, formal, ceremonial"), combining sollus ("whole, complete") and annus ("year"). Originally described recurring religious ceremonies held "every whole year." Over time, the sense of ritual regularity expanded to denote gravity and formality in any context, shedding its literal connection to annual events. The spelling evolved through Old French solempne, simplifying to "solemn" in English while retaining the gravitas of its Latin roots.
The judge delivered a solemn verdict in the silent courtroom.
They exchanged solemn vows under the oak tree.
His face grew solemn as he recounted the tragedy.
The treaty was signed with a solemn ceremony.
Despite the festive decorations, her mood remained solemn.