Sometimes a trope is limited, but people put examples and wicks that are broader, due to lack of a SuperTrope that covers the broader definition.

This is a frequent cause for problems on TvTropes. SquarePegRoundTrope examples tend to be a sign that a trope (or a group of {{Sister Trope}}s) has one or more underlying concepts that cover less specific situations.

When an editor wants to list an example that shares the underlying concept, but doesn't actually match the specific Trope(s), they will tend to add it to one (or more) of the pages, perhaps saying that it is "a variation" or "not a straight example". Sometimes these entries are decidedly in violation of the page's definition, making it textbook SquarePegRoundTrope. When multiple editors start using the same "variations", it is a form of TropeDecay.

Why does it happen? It's a lot easier for editors to propose (and write up) tropes of specific concepts than the more general ones that underlie them. It's often the case that a new trope was inspired by one specific example, and the troper found enough similar examples that a trope could be formed. So any attempt to identify a larger trope may be criticized as being [[Administrivia/PeopleSitOnChairs too broad to have a tropable meaning.]]

!!Signs a trope may be suffering from Missing Supertrope Syndrome
* WordCruft to fit examples into the definition.
* Generic name for a specialized trope.
* Multiple sister tropes without a parent trope (or index).

The simplest fix is to go to YKTTW, create the {{supertrope}}, and migrate any misplaced examples and {{wick}}s to the correct trope. Usually, that's all that's necessary. Depending on how far the symptoms have progressed, more drastic action might be needed. In some cases, tropes have accumulated so much misuse for their supertrope that we've had to give them the full TropeTransplant, broadening the trope to accommodate the TropeDecay and launching a new trope to salvage legitimate examples of the more narrow subtrope; this is mostly for specific tropes that have overly-general names. Other times, the narrower trope might be Administrivia/TheSameButMoreSpecific, and once the supertrope is in place, the subtrope is no longer necessary and we just [[Administrivia/InternalSubtrope redirect it to the parent trope]].
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