Learn Icelandic: Gætirðu endurtekið spurninguna?

Gætir is the past subjunctive form of geta (to be able to). Just like in English, where we say "could" instead of "can" to be polite, Icelandic uses this past subjunctive form to make a softer, more polite request. The -ðu attached to it is the pronoun þú (you).

Why is the verb endurtekið used here instead of the infinitive að endurtaka?

The verb geta is special in Icelandic grammar. While most helping verbs take an infinitive, geta always requires the main verb to be in the supine form (sagnbót), which is identical to the neuter singular past participle. That is why we see endurtekið instead of endurtaka.

How is the word endurtekið built?

The base verb is endurtaka (to repeat). It is a compound of the prefix endur- (meaning "again" or "re-") and the common verb taka (to take). So it literally translates to "retake".

Why does spurninguna end in -una?

Spurning (question) is a feminine noun. In this sentence, it is the direct object of the verb endurtaka, which means it must be in the accusative case. The -una ending is the definite article ("the") for a feminine accusative noun.