The state or characteristic of being cheerless.(noun)
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Use "cheerlessness" in a sentence
"Rain-soaked colors convey the soggy melancholy of the Pacific Northwest as distinctly as the thin, smeared palette in "Quiet City" reflected the dim electric cheerlessness of New York subways and diners at night."
"For all its cheerlessness, the novel is anything but grittily realistic."
"I, for one, found no joy in the work, colored as it was by his cheerlessness and dispassionate industry."