Erisugused

Erisugused is an obscure term that appears in a small subset of Estonian-language linguistic writings and in some world-building glossaries. It is not a standard or widely recognized category in mainstream linguistics. The word seems to be formed from the Estonian morphemes eri- meaning “different” or “special” and sugused meaning “kinds” or “types,” yielding a literal sense of “different kinds.”

In the limited contexts where it is used, erisugused functions as a plural attributive modifier to designate a subgroup within a larger class that is distinguished by particular features. The usage is not fixed, and many writers prefer clearer alternatives such as eri tüübid or erivormid to avoid ambiguity. When defined in theoretical or fictional grammars, erisugused may be given explicit criteria to separate subtypes and may be accompanied by examples illustrating how the subtypes differ in form, function, or behavior. However, there are no widely accepted criteria or standardized definitions for the term, and references to erisugused remain scarce.

Erisugused is thus best understood as a niche, nonstandard term rather than a mainstream linguistic category. It may appear in discussions of classification and typology in Estonian-language texts or in speculative or experimental grammars. Related discussions often connect it to broader Estonian morphological concepts such as eri- and sugune, and to general methods of grouping and differentiating varieties within a class.