The death of a spouse, as the most stressful event in old age, can put the older adult at risk of death if they do not adapt again. Since the process of adapting to bereavement occurs in the context of social interactions and is experienced in different ways in different societies, this research was conducted with the aim of explaining the background and factors affecting the adaptation of the older adult to the death of their spouse. The experiences of 21 participants were collected through semi-structured interviews and analyzed with Lundman and Granheim’s conventional content analysis approach, which led to the creation of three main categories1: how one perceives loss; 2:quality of life after the deceased; and 3: the quality of marital life. The findings indicate the importance and impact of background factors in how the adaptation process occurs. Identifying these factors can provide practical solutions to experts, caregivers and bereaved older adult.