The phrase 'going extinct' refers to the process of a species dying out completely. There are several other phrases that can be used to describe this phenomenon. Some synonyms include 'vanishing', 'disappearing', 'becoming extinct', 'dying out', and 'population decline'. These terms can be used interchangeably to describe the same thing and to highlight the severity of the situation. The loss of a species can have profound impacts on the ecosystem, as they often play a crucial role in maintaining balance. It is important to recognize and understand the implications of species endangerment and work towards conservation efforts to prevent further loss.