Someone filled with or expressing grief or sadness, especially over a death; someone who mourns.(noun)
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Use "mourner" in a sentence
"The mourner is cheared, and the anxious have rest;"
"Boss has found that such losses are uniquely painful, partly because they deprive people of mourning rituals and can go on until the mourner is “physically and emotionally exhausted from the relentless uncertainty.”"
"Corporeal metaphors for the child appear often in the texts, especially when the mourner is not the biological mother."