The final moss of a series of mosses, where a moss is when a potential victory or spotlight is stolen or thwarted, or in sports like basketball and football where someone steals or catches a pass that was intended for someone else.

A missmoss in general context is the last laugh of a mossing battle of any kind.

A horoscope so bad that it strikes fear into the heart of the reader, rendering them unable take action or make a decision on anything or to even leave the house. This is caused by a paralyzing fear that those actions or decisions may cause the predictions to come true.

The action of stealing someone's spotlight, the most common context is in football where someone steals someone else's moss from over them. It can be used in any context when someone steals someone else's potential moment of glory or victory moment for themselves.

In general it is the last moss of a mossing duel. A mossing duel is a contest where two or more people moss each other to hold the moss, where a moss is anytime a victory or glory moment is thwarted or stolen with no answer.

The term missmoss originates from the sports of football and basketball. In those sports, a moss refers to a stolen pass, and a missmoss was when the pass was stolen back or again, making the original mosser "miss the moss." The term missmoss was coined for when multiple mosses happen consecutively, and the last moss of the succession being the missmoss, referring to the fact that the last moss caused the previous mosser(s) to "miss the moss" or have their own moss attempt thwarted.

A missmoss can also refer to the mossing duel itself with the person coming out on top being the holder of the missmoss. It is also used to refer to when a mosser gets mossed.