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Use "childlessness" in a sentence
"According to the National Marriage Project, the incidence of childlessness is growing across the socioeconomic scale."
"Diamond's book will help scare bright and impressionable young people into childlessness, which is turning out to be a much worse problem for civilization than the deforestation that scares Diamond."
"Faced with the reality of being alone for the first time she talked openly and honestly with John about her feelings: her disgust with herself, her fear of failing at her job, her growing conviction that her childlessness was a punishment, and the frequent wish that she could simply die and put an end to her misery."