The phrase "a somber ending" is correct and usable in written English.
It can be used to describe a conclusion that is serious, gloomy, or reflective in tone, often in the context of literature, film, or storytelling.
Example: "The novel concluded with a somber ending that left readers contemplating the fragility of life."
Alternatives: "a bleak conclusion" or "a melancholic finale."
It was a somber ending to a season that had been spectacular to that point.
The judge's decision was a somber ending to an ordeal that badly wounded St. John's Church in Darien and reflected poorly on the Catholic Diocese of Bridgeport for not detecting the fraud sooner.
As Wikipedia notes, "The Scott/Logan version of I Am Legend was a bold, artistic mash of sci-fi action and psychological thriller, without dialogue in the first hour and with a somber ending". They're actually right y'know.
It is a somber end for what was once an iconic building in the airline industry and the art world, with its interior murals and stained glass exterior.
The 13-minute address, delivered from the East Room of the White House before an audience of 200, including 50 invited guests and members of Mr. Bush's cabinet, was a somber end to an administration that, by Mr. Bush's own account, did not always go according to plan.
But my relationship wasn't between a husband and a wife," Berry said of the song's original somber ending.
He does not recall a somber or end-of-the-world mood but acknowledged, "The other medals did not mean as much after we lost hockey".
Though the music video, created by dancers Ezra Hurwitz and Robert Fairchild, begins on a somber note, it ends with an uplifting message.
In contrast, the originally-planned season finale, "Smoke Gets in Your Eyes", which Homicide producers felt had a sense of resolving season storylines, was a somber episode which ended with a sad image of Bolander quietly singing to himself at a bar over a beer.
So if nothing else, the somber end to the summer in several communities has quieted 16-year-olds who might have complained that only slightly older friends have full licenses while they will have to wait two years.
But despite the somber end, I still had fun.
