Ruinousness refers to the state of being destructive, catastrophic or devastating. It is a term typically used to describe situations or activities that can lead to serious harm. There are several synonyms for the word "ruinousness" including destructiveness, calamity, devastation, destruction, desolation, and havoc. Each of these words represents a situation that can result in significant harm to the environment, people or property. They are often used in the context of natural disasters such as floods, earthquakes, hurricanes and wildfires, but can also refer to human-made disasters like war, pollution and deforestation. It is important to be aware of these words to effectively communicate the severity of a situation.