koristamiseni
Koristamiseni is a term encountered mainly in linguistic discussions about Estonian nominalization and case endings. It is not a standard dictionary headword, but scholars sometimes use it to illustrate how the Estonian verb koristama (to clean) can interact with nominalizing and boundary-related suffixes to express scope or extent. In these discussions, koristamiseni is treated as a possible formation rather than a common everyday form.
Etymology and formation: the base verb koristama yields the noun-like form related to cleaning, koristus (cleaning)
Grammatical function and usage: because koristamiseni is not a standard word, its status is primarily descriptive
See also: Estonian language, nominalization in Estonian, suffix -mine, suffix -seni, koristan (root verb related concepts).
Notes: koristamiseni is not widely attested in standard dictionaries and is best understood as a construct