Breakdown of Þruman er svo hávær að hundurinn verður hræddur.
Questions & Answers about Þruman er svo hávær að hundurinn verður hræddur.
It is the Icelandic pattern for so ... that.
So svo intensifies the adjective, and að introduces the result clause.
A good way to read the structure is:
- Þruman er svo hávær = The thunder is so loud
- að hundurinn verður hræddur = that the dog gets scared
Because Icelandic usually puts the at the end of the noun as a suffix.
- þruma = thunder
- þruman = the thunder
With many feminine nouns ending in a vowel, the definite form in the nominative singular adds -n.
So Þruman is not a different word from þruma; it is the definite form.