"Bum deal" is an idiom that describes a situation where someone is unfairly treated or receives a poor outcome. There are many synonyms for this phrase that can be used to convey the same meaning, such as "raw deal," "unfair treatment," "ruined chances," "misfortune," "hard luck," and "difficult circumstances." Other phrases that can be used as synonyms include "being taken advantage of," "being shortchanged," "being treated unjustly," and "being dealt a bad hand." These synonyms are useful in a variety of contexts, such as personal and professional life, to describe situations that are not favorable or desired, or to express empathy for someone going through a tough time.