vesiputousmaisen
Vesiputousmaisen is a Finnish adjective meaning "waterfall-like" or "resembling a waterfall." It is formed from the noun vesiputous (waterfall) and the suffix -mainen, which creates adjectives that express resemblance or characteristic. Vesiputousmainen is the base form; vesiputousmaisen is its genitive singular form, used when the adjective modifies a noun in the genitive case, for example vesiputousmaisen maiseman kuvaus, meaning "a description of a waterfall-like landscape."
In ordinary use, the common attributive form before a noun is vesiputousmainen, as in vesiputousmainen maasto