Sisupper

Sis-upper is a term that refers to a female sibling who is older than another sibling. It is a simple descriptive term used within family structures to distinguish the age order of sisters. The term "sis-upper" is not a formal or technical designation and is generally used in informal conversation. Its opposite would be a "sis-lower," referring to a younger sister. The concept of a sis-upper emphasizes the seniority or birth order within a sister relationship. This distinction can sometimes carry cultural or familial implications, such as responsibilities or privileges associated with being the older sibling. However, the term itself is purely a descriptor of relative age.