pestävillä

Pestävillä is a Finnish grammatical form derived from the verb pestä, meaning to wash, and the participial suffix -vä, which yields the adjective pestävä meaning washable or able to be washed. Pestävillä is the adessive plural form of this adjective, used to describe plural nouns in the adessive case. In practice, pestävillä typically appears in phrases that indicate where or how something is washable, such as on washable surfaces or with washable materials.

As a morphological form, pestävillä combines the meaning of washable with the adessive case, which in Finnish expresses location or surface. This makes it common in labels, cleaning instructions, and linguistic discussions that illustrate Finnish noun-adjective agreement and case endings. For example, phrases like pestävillä pinnoilla (on washable surfaces) or pestävillä materiaaleilla (with washable materials) show how the form functions within a sentence. The form is generally not used as a stand-alone lexical item; rather, it appears as part of a larger noun phrase.

Etymologically, pestävillä traces back to pestävä, the singular form meaning washable, which itself is built from the verb pesta (to wash) with the participial suffix -vä. The adessive plural ending -illa/-illä yields pestävillä. In everyday Finnish, the more common everyday adjective for a single item is pestävä, while pestävillä is encountered when referring to multiple items or surfaces in contexts that require the adessive case.

See also: pestävä, pestävä materiaali, pestävillä pinnoilla.