The phrase "owed to" is used to express the reason or cause of something. There are several synonyms for this phrase, including "attributable to," "caused by," and "due to." These synonyms can be used interchangeably in most cases. However, depending on the context, some synonyms may be more appropriate than others. "Attributable to" is often used in formal writing to express the reason behind something, while "due to" is used to indicate the cause of a negative outcome or situation. "Caused by" is a more general synonym that can be used in various contexts to express the reason for something.