This is the 400th most frequent Icelandic word.
góðum
The Icelandic word "góðum" is the dative plural form of "góður," meaning "good" in English.
The word "góðum" is used as an adjective in the dative case, plural form, describing "skilningi".
Ég tala við nemanda í góðum skilningi.
I talk to the student with good understanding.
In this sentence, "góðum" functions as an adjective in the dative case, plural, describing "vinum."
Við sitjum með góðum vinum í hópnum.
We sit with good friends in the group.
Here, "góðum" is an adjective in the dative case, plural, describing "bókum."