This is the 857th most frequent Icelandic word.
suður
"South"
In this sentence, 'suður' is used as a direction, indicating movement towards the south.
Við keyrðum suður til Reykjavíkur um helgina.
We drove south to Reykjavík over the weekend.
Here, 'suður' denotes a general direction to the south, implying a direction to travel towards.
Þegar þú ferð suður, þá muntu sjá fallegt fjall.
When you go south, you will see a beautiful mountain.
In this usage, 'suðurhluta' means 'southern part', with 'suður' describing a specific region (south) of a larger area.