This is the 710th most frequent Icelandic word.
stærsta
"Stærsta" means "biggest" or "largest" in English.
Here, "stærsta" is used as a superlative adjective modifying the noun "kirkjan" (church), describing it as the largest among similar entities in a specific context.
Hallgrímskirkja er stærsta kirkjan í Íslandi.
Hallgrímskirkja is the largest church in Iceland.
In this sentence, "stærsta" is employed to emphasize the significance of "ástæðum" (reasons), indicating it as the most important or chief one.
Þetta er stærsta ástæðum þess að við flytjum.
This is the greatest reason why we are moving.
The word "stærsta" is used to modify "húsinu" (house), designating it as the most large in comparison within the given setting.