Poistuakseen

Poistuakseen is the third infinitive form of the Finnish verb poistua, meaning to leave. It expresses purpose and is translated as “in order to leave” or “to leave (in order to).” The form is created by attaching the suffix -akseen to the verb stem poistu-, following the standard pattern for the Finnish third infinitive. It is a non-finite form, not conjugated for person or number, and the subject of the infinitive is the same as that of the main clause.

Usage: The third infinitive is used to express purpose or intention in more formal or literary Finnish. It commonly appears in subordinate clauses or in constructions where the action of leaving is undertaken to achieve a particular goal. In everyday speech the 3rd infinitive is less common, and speakers may opt for other expressions to convey purpose rather than using the -akseen form.

Other examples of verbs forming the third infinitive with the same suffix include auttaakseen (to help) and nauraakseen (to laugh), illustrating how the -akseen suffix is used to express purpose across different verbs.

Etymology and relation to other forms: poistuakseen derives from poistua plus the -akseen suffix, which is part of a broader system of Finnish infinitives used to convey purpose. As a non-finite form, it does not take tense, mood, or number endings and relies on the main clause for those grammatical aspects. Related discussions often cover the kolmas infinitiivi and comparisons to other infinitival forms in Finnish.

See also: Finnish grammar, Poistua, Kolmas infinitiivi.