This is the 239th most frequent Icelandic word.
sinna
To care for, attend to, or look after.
Here, 'sinna' signifies the act of attending to or addressing a matter or task.
Ég hef ekki tíma til að sinna verkefninu núna.
I do not have time to attend to the project now.
In this example, 'sinna' means to address or manage correspondence or similar.
Hann gleymdi að sinna tölvupóstinum sínum.
He forgot to attend to his emails.
In this sentence, 'sinna' is used to mean 'to care for' or 'attend to'.