Perättäisiin

Perättäisiin is not a standard Finnish word. In contemporary usage and major dictionaries it does not appear as a recognized lexical item. In linguistic discussions, however, it may be described as a hypothetical or nonstandard verb form used to illustrate Finnish inflection patterns rather than as an independently attested word.

Morphology and possible interpretation: The form would represent a passive conditional mood, third person plural, built from a verb stem with a -tt- consonant cluster plus the suffix -äisiin/-taisiin. This aligns with the general Finnish pattern seen in forms such as tehtäisiin (they would be made). Because there is no widely attested verb with a stem like perätt-, the exact semantic content of perättäisiin cannot be fixed without referring to a concrete base verb. As such, it is primarily of theoretical interest rather than a functional part of standard Finnish.

Usage and status: If encountered, perättäisiin would typically appear in theoretical linguistics discussions, grammatical analyses, or possibly dialectal texts illustrating inflection rather than in everyday language. Its appearance in actual discourse would be unusual and could lead to confusion with standard expressions that convey related ideas, such as adverbs meaning “consecutively” or “in succession.”

Relation to related terms: Perättäisiin is distinct from peräkkäinen and peräkkäin, which are part of the standard vocabulary meaning “consecutive” or “in succession.” Those forms describe a temporal or sequential relationship, whereas perättäisiin, as a hypothetical inflection, would be a purely morphologico-syntactic construct rather than a commonly used lexical item.

See also: peräkkäinen, peräkkäin, perättäisesti, peräkkäisyys, Finnish grammar, conditional mood, passive voice.