lisättyihin

Lisättyihin is a Finnish grammatical form, specifically the illative plural of the adjective lisätty, meaning “added.” It is used to describe things that are directed toward or contained in a group or set in the illative case. In practice, lisättyihin commonly appears with plural nouns such as tietoihin, tiedostoihin, or ryhmiin to indicate data, files, or groups that have been added.

Formation and agreement: The base participle lisätty comes from the verb lisätä, “to add.” As an adjective in the plural illative, it takes the suffix -iin, yielding lisättyihin. The corresponding singular illative form is lisättyyn. Other related forms include lisättyjen (genitive plural) and lisättyjä (partitive plural), which show how the participle functions across different cases and numbers.

Usage notes: Lisättyihin is used when the speaker refers to “the added ones” or items that have been added within a larger set. It typically accompanies a noun in illative case to express movement into or inclusion within that set. For example: Raportti perustuu lisättyihin tietoihin, meaning that the report is based on the data that have been added.

Relation to other forms: Lisättyihin contrasts with lisättyyn (singular illative), lisättyjen (genitive plural), and lisättyjä (partitive plural). All derive from lisätty, the past participle of lisätä, and are used to describe additions with agreement in number and case.

See also: Finnish grammar, illative case, past participles.