pitkäikäisyydelle
Pitkäikäisyydelle is the allative form of the Finnish abstract noun pitkäikäisyys, which denotes longevity or long life. The allative suffix -ydelle expresses direction, purpose, or target, so pitkäikäisyydelle can be translated as "for longevity" or "toward longevity." The base word combines pitkä (long) andikä (age) with the -isyys suffix, turning into an abstract noun.
In usage: It appears in formal or technical language, especially in gerontology, epidemiology, health policy, and
Notes: The term is relatively formal and less common in everyday speech. It can occur with verbs
For related terms, see pitkäikäisyys (longevity) and pitkäikäisyyden (genitive).