Not much is worse than a troll.
More Icelandic Proverbs:
Words of insults are futile, the more they fit, the more they are lost.Icelandic
Speak the truth, but keep one hand on the sword.
Icelandic
Trusty as a troll.
Icelandic
The generous and bold have the best lives.
Icelandic
Better to drink the milk than to eat the cow.
Icelandic
Often a troll-woman is under fair skin, and virtue under dark hair.
Icelandic