EDNOS or Eating Disorder Not Otherwise Specified is a term used to describe a range of eating disorders that do not fit into a specific diagnostic category. There are several synonyms for EDNOS, including atypical eating disorders, subthreshold eating disorders, and unspecified feeding or eating disorders. These terms are used to describe disordered eating behaviors that do not meet the criteria for anorexia nervosa, bulimia nervosa, or binge eating disorder. Such symptoms could include purging without bingeing, restricting food intake without a low body weight, or repeatedly engaging in binge eating without significant weight gain. Being aware of these synonyms can help individuals to better understand the complex nature of eating disorders and seek appropriate treatment.