Poistuisi

Poistuisi is a Finnish verb form. It is the third-person singular conditional mood of the verb poistua, which means to leave or depart. The form expresses a hypothetical or contingent action: “would leave.” In Finnish, the conditional mood accompanies the stem of the verb and the ending -isi appears in the 3rd person singular, with the subject indicated by context rather than a separate ending.

Morphology and usage: The infinitive of the root verb is poistua. The conditional form poistuisi corresponds to “he/she would leave.” It is used in subordinate clauses or hypothetical statements, typically introduced by if-clauses (jos) or other conditional contexts. It is not used as an imperative or as a straightforward present action; rather, it communicates what would happen under certain conditions.

Examples:

- Jos tilanne sallisi, hän poistuisi paikalta. — If the situation allowed it, he would leave the scene.

- Hän poistuisi paikalta, jos hänet pyydettäisiin. — He would leave the scene if he were asked to.

Related terms and etymology: Poistuisi derives from poistua, meaning to depart or to go away. The construction is part of Finnish mood and tense systems, and the form contrasts with the present tense poistuu (he/she leaves) or the past tense poistui (left). The conditional mood is commonly used in planning, hypothetical reasoning, or polite suggestions.

In summary, poistuisi denotes a hypothetical action in the third-person singular, equivalent to “would leave” in English, and is used to express contingent departures in Finnish.