I'm not sure if they were more solemn than the other groups, but in my mind's eye they are stoic and solemn.
Injured veterans came to Crawford, Texas, for a mountain-bike race on a solemn holiday.
No putdowns, no jokes, no frivolity whatever—he was most solemn and his eyes focused somewhere far beyond the back of my head.
Inspiring rhetoric and solemn promises can do only so much for an incumbent administration.
Not for a single moment did I imagine that this solemn and awful duty would one day fall to me.
The solemn prelude began from a full concert of the various instruments.
The old farmer had believed the solemn words of the impostor.
She moved a little nearer him, eyes holding his own in solemn questioning.
Harriett felt nothing but a strange, solemn excitement and exaltation.
Ruth, for the sake of effect, joked on the most solemn subjects.
mid-14c., "performed with due religious ceremony or reverence, sacred, devoted to religious observances," also, of a vow, etc., "made under religious sanction, binding," from Old French solempne (12c., Modern French solennel) and directly from Latin sollemnis "annual, established, religiously fixed, formal, ceremonial, traditional," perhaps related to sollus "whole" (see safe (adj.)).
"The explanation that Latin sollemnis was formed from sollus whole + annus year is not considered valid" [Barnhart], but some assimilation via folk-etymology is possible. In Middle English also "famous, important; imposing, grand," hence Chaucer's friar, a ful solempne man. Meaning "marked by seriousness or earnestness" is from late 14c.; sense of "fitted to inspire devout reflection" is from c.1400. Related: Solemnly.