The term 'utter ruin' can be broken down into three crossword solutions: PERDITION (9 letters), DEVASTATION (11 letters), and DOOM (4 letters). PERDITION is a state of eternal punishment and suffering, often associated with religious beliefs. DEVASTATION is the act of destroying something completely, leaving it in ruins. DOOM is a certain fate or destiny, usually seen as unavoidable and undesirable. All three words are related to the concept of utter ruin, which is the complete destruction of something.