The word "siblinged" is a term that refers to the act of having siblings or being part of a group of brothers and sisters. While there aren't direct synonyms for this specific term, there are alternative words that can be used to convey a similar meaning. For instance, the word "siblinged" can be replaced by "having siblings", "belonging to a sibling group" or "being part of a family with brothers and sisters". These phrases capture the essence of the term and can be used interchangeably with "siblinged" to describe a person's familial relationships.