adjective
- extremely serious; showing or characterized by an intense level of seriousness
Usage: informal
Examples
- The ultraserious student never smiled during class discussions.
- His ultraserious approach to the project impressed his colleagues.
- She gave him an ultraserious look when he made the joke.
- The meeting took on an ultraserious tone after the announcement.
- Despite his ultraserious demeanor, he was actually quite funny in private.
- The coach’s ultraserious training methods produced excellent results.