The phrase "a grim note" is correct and usable in written English.
It can be used to describe a serious or somber tone in a statement or situation.
Example: "The report ended on a grim note, highlighting the challenges that lay ahead for the community."
Alternatives: "a somber tone" or "a serious note".
But while the curators offer an inspiringly diverse reading of American art, they end on a grim note.
He said victims' descriptions of their American captors' appearance had struck a grim note of recognition because of his past experience.
Karan Grewal, 21, a former suitemate of Mr. Cho, said he had decided to finish classes to avoid ending his college career on such a grim note.
The London markets entered the second quarter on a grim note as leading shares followed the US and Asian markets lower on fears of a trade war, with a sell-off in tech and related stocks.
On a grim note, the oil price war could make the U.S. Cold War with Russia look tame.
He'd included a grim note telling his former girlfriend that the photos symbolized how his weekend was going.
(We also have Title IX to thank, at least indirectly, for the WNBA, for the gold medals won by our national women's hockey and soccer teams and, on a grimmer note, for the fact that girls, just like boys, can die while playing football).
On a grimmer note, the records on Germany capture effectively the rise of the National Socialist German Workers Partyy (commonly referred to in English as the Nazi Party) in the interwar period in cities like Heidelberg, and the consequences that ensued in terms of mass casualties for ones or exile for others.
"Willie Pete" ends on a supposedly grim note, as the team finally sees what they think are tweets confirming that something horrible happened in Pakistan.
Just two days after a Merrill Lynch analyst lauded the performance of the consumer magazine group at Primedia in an otherwise grim note that sent shares tumbling, the company on Friday asked John Loughlin, the chief executive of the consumer group, to step down.
