tapahtuvilla

Tapahtuvilla is a Finnish grammatical form derived from the verb tapahtua, meaning “to occur” or “to take place.” It represents the adessive plural form of the present active participle сюtical form “tapahtuva,” which denotes something that occurs or is happening. As a participial adjective, tapahtuva describes nouns and is declined to agree with number and case. When it takes the adessive plural ending -illa, the result is tapahtuvilla, used to indicate location or context “on/at the occurring ones” or, more naturally in English, “the occurring …” phrases.

Morphology and function: The base stem is tapahtuva-, deriving from the verb tapahtua. The ending -lla marks the adessive case in plural, yielding tapahtuvilla. This form can modify plural nouns in the adessive or appear in predicative constructions where the surrounding grammar allows such usage. In practice, it conveys that the referenced items are ongoing, developing, or occurring rather than completed.

Usage: Tapahtuvilla is most common in formal, descriptive, or technical Finnish, such as academic writing, reports, or legal-style language. It often appears in phrases like tapahtuvilla ilmiöillä (on/with phenomena that occur) or tapahtuvilla ajanjaksoilla (during occurring/ongoing periods). The precise English rendering depends on the surrounding nouns and cases.

Examples:

- Tapahtuvilla ilmiöillä on merkittäviä vaikutuksia. (There are significant effects on the phenomena that occur.)

- Tutkimus tarkastelee tapahtuvilla aikajänteillä tapahtuvia muutoksia. (The study examines changes occurring over the relevant time frames.)

See also: Finnish grammar, participles, adjectives, Finnish case system.