1. serious and solemn in manner; lacking humor or lightheartedness
Usage: often used to describe someone who is overly serious

Examples

• The sobersided professor rarely smiled during his lectures.
• Her sobersided approach to the meeting made everyone uncomfortable.
• Despite his sobersided reputation, he was actually quite kind.
• The sobersided judge listened carefully to both arguments.
• She found his sobersided personality rather dull at parties.
• The sobersided tone of the documentary matched its serious subject matter.