Breakdown of Olet liian väsynyt pestäksesi tämän nuhjuisen lumpun.
tämä
this
olla
to be
väsynyt
tired
pestä
to wash
Questions & Answers about Olet liian väsynyt pestäksesi tämän nuhjuisen lumpun.
How is pestäksesi built to mean "to wash" in this context?
This uses the excessive resultative construction taught in this lesson. Start with the first infinitive of the verb (pestä, to wash), add the translative case ending -kse- (which indicates a result or purpose), and attach the possessive suffix that matches the subject. Since the subject is "you" (olet), we use the suffix -si.
The sentence implies that the washing won't actually happen. Why isn't the object tämän nuhjuisen lumpun in the partitive case?
Grammatically, the main clause is still affirmative ("You are too tired..."). The negative implication of the resultative construction doesn't change the basic object rules of the sentence. Because you are talking about washing the entire rag (a complete action), the object takes the genitive-looking accusative case (-n), not the partitive.
The word väsynyt looks like a past tense verb form. What role does it play here?
Väsynyt is the past active participle (the NUT-participle) of the verb väsyä (to get tired). However, in Finnish, many of these participles have lexicalized into standard adjectives. While it literally means "having gotten tired", here it functions perfectly as the regular adjective "tired" and doesn't require an auxiliary verb to form a perfect tense.
What is the dictionary form of lumpun, and why does its spelling change?