lisääntyneisiin

Lisääntyneisiin is a Finnish verb-inflected form derived from lisääntyä, meaning to increase or reproduce. The base adjective-like participle lisääntynyt means “increased,” and lisääntyneisiin represents a specific plural case form that attaches to a plural antecedent. In practice, lisääntyneisiin functions as a way to refer to groups or sets of things that have become larger, with a sense similar to “to the increased ones” or “toward the increased ones,” depending on the syntactic context.

Grammatical notes about this form center on its construction and usage rather than a standalone dictionary entry. It combines the stem lisääntyne- with the plural case ending -isiin, which marks a relation to a destination, target, or scope in various Finnish case patterns. The exact syntactic role of lisääntyneisiin—whether it marks a direction, a recipient, or a descriptive attribute—depends on the surrounding sentence and the noun it connects with. Because it is a relatively specialized form, it appears most often in written Finnish, particularly in formal, descriptive, or statistical prose.

Usage and context: lisääntyneisiin tends to occur in discussions of demographic shifts, ecological changes, or population studies where a group has undergone growth. It is not common in everyday speech, where simpler constructions are typically used. The form should be understood as part of the larger family of lisääntyä-related expressions, including lisääntyneet (increased, plural participle) and lisääntyminen (increase, reproduction).

See also: lisääntyminen, lisääntyminen ja lisääntyynyt, Finnish grammar.