Unfortunate incident is a common phrase used to describe a mishap or negative occurrence. However, there are many synonyms that can be used to express the same idea. Some of these include: mishap, calamity, setback, misfortune, tragedy, accident, disaster, blunder, fiasco, mishandling, setback, and snafu. Each of these synonyms has its own unique connotation and can be used to describe different types of negative occurrences. For example, a tragedy may be used to describe a more serious and emotional event, while a blunder may be used to describe a mistake or error in judgment. Using synonyms can add variety and depth to our language, helping us to convey our thoughts and feelings more effectively.