terveellisillä

Terveellisillä is the adessive plural form of the Finnish adjective terveellinen, meaning healthy or healthful. It is used to describe a group that is characterized as healthy, or to indicate something related to that group, typically in phrases like “terveellisillä ihmisillä” (among/with the healthy people).

In Finnish, adjectives agree with the noun in number and case. The corresponding forms for terveellinen include: nominative plural terveelliset (the healthy ones), adessive singular terveellisellä (on/at the healthy one), adessive plural terveellisillä (on/at the healthy ones), and illative plural terveellisiin (into the healthy ones). Thus, terveellisillä marks that the described context concerns a group described as healthy in the adessive case.

Usage notes: terveellisillä is common in health, nutrition, and public-health contexts, often paired with a noun to specify the group, such as terveellisillä ihmisillä or terveellisillä ruokavalioilla. It is more typical in written Finnish or formal speech; in everyday talk, speakers may prefer simpler constructions like terviselaisten (less common) or use the base noun phrase terveelliset ihmiset.

Etymology: the word derives from the stem terveell- from terveellinen, plus the adjectival suffix -inen, with standard Finnish case endings applied.

See also: Finnish grammar, Finnish adjectives, Finnish health terminology.