Questions & Answers about Hún vaknaði úr dáinu.
In Icelandic, vakna already means wake up / awaken. So Hún vaknaði naturally means she woke up.
English often uses a particle like up, but Icelandic does not need one here. You can sometimes see vakna upp, but plain vakna is the normal basic verb.
Vaknaði is the 3rd person singular past tense of vakna.
So:
- vakna = to wake up
- vaknaði = woke up
It matches hún (she), which is third person singular.
This is a very common and useful distinction:
- vakna = to wake up, to become awake
- intransitive: the subject wakes
- vekja = to wake someone, to awaken someone
- transitive: someone causes another person to wake
So in this sentence, hún is the one who wakes up herself, so vakna is the correct verb.
Compare:
- Hún vaknaði. = She woke up.
- Ég vakti hana. = I woke her up.