substantatiivista

Substantiivista is the partitive singular form of the Finnish adjective substantiivinen, meaning “substantive” or “noun-related.” In Finnish, adjectives decline to agree with the nouns they modify, and substantiivista appears when the modified noun is in the partitive case. This form is typical for adjectives of the -inen type, where the partitive singular ending is -ista.

Usage: Substantiivista is used in phrases describing a noun in a partitive context, for example when referring to an indefinite quantity or when the object of the sentence is not a whole entity. The form also appears in noun phrases such as substantiivista muotoa ("a nominal form") or substantiivista kieltä ("of the noun language").

Examples: Substantiivista muotoa käytetään tässä lauseessa. (A nominal form is used in this sentence.) Kielenoppija kiinnittää huomiota substantiivista muotoa koskeviin sääntöihin. (The language learner pays attention to the rules concerning the nominal form.)

Notes: The form is one of many inflectional endings Finnish adjectives use; to identify it, examine the noun it modifies and the case. It reflects vowel harmony, with the -ista ending typical for -inen adjectives in the partitive singular.