1. plural of senility; instances or conditions of mental decline associated with old age
Usage: medical; formal

Examples

• The nursing home staff was trained to handle various senilities among the residents.
• Different types of senilities require different approaches to care.
• The doctor explained that not all senilities progress at the same rate.
• Early intervention can sometimes slow the progression of certain senilities.
• The family struggled to cope with their grandfather’s advancing senilities.