Rekisteröivätko

Rekisteröivätko is a Finnish verb form used to form yes-no questions about whether multiple subjects perform the action of registering. It is built from the verb rekisteröidä, meaning to register or enroll, and combines the present tense third-person plural form rekisteröivät with the interrogative suffix -ko/-kö to create a question: rekisteröivätko.

Morphology and usage notes: The suffix -ko/-kö is the Finnish question particle that marks a yes-no question. The exact choice ofko vs kö follows vowel harmony rules and the preceding syllable, as with other -ko/-kö forms. In practice, rekisteröivätko is used when the subject is plural and the speaker wants to confirm whether they register or complete the registration action. The subject pronoun is often omitted, since the verb ending already signals a plural third-person subject, but it can appear for clarity: Rekisteröivätkö he osallistujat tämän tiedoston?

Examples of use: Rekisteröivätko osallistujat tämän tilin ennen tapahtumaa? (Are the participants registering this account before the event?) Rekisteröivätko työntekijät kaikki tiedot järjestelmään? (Are the employees registering all data into the system?)

Limitations and related forms: Finnish forms yes-no questions with -ko/-kö primarily apply to finite verbs in indicative or imperative forms. In embedded or indirect questions, the question particle -ko/-kö is typically not used; the clause is framed as a reported or indirect inquiry instead.

See also: rekisteröidä, Finnish question particle -ko/-kö, Finnish verb conjugation.