--- "llama_nom" wrote:

> This is `er(u)' "are" + the negative
> suffix -a, an archaic feature found mainly in poetry.




Excactly. The best known example is probably in Völuspá 3:

"var-a sandr né sær / né svalar unnir"
('was-not sand nor sea nor cool waves')

Here's another one from Hávamál:

"er-a svá gott / sem gott kveða / öl alda sonum"
('is-not as good as they claim ale for sons of men')

Regards,
E.