Nuclear winters are a catastrophic event that can arise from nuclear warfare or accidents. The term "nuclear winters" denotes a prolonged period of darkness and cold caused by a massive release of smoke and debris into the atmosphere, resulting in a decrease in temperature, crop failures, and famine. Synonyms for the term "nuclear winters" include the ominous phrases "nuclear holocaust," "nuclear apocalypse," and "nuclear winter death." Other descriptors that capture the horror and destruction that come with nuclear winters are "atomic devastation," "radiological crisis," and "nuclear fallout." In summary, synonyms for "nuclear winters" convey the dire consequences and human suffering that such an event would bring.