Úfriðr

As defined by A Concise Dictionary of Old Icelandic (Geir Zoëga):

úfriðr

m. war, hostilities; er þeir urðu varir við úfrið, when they found that the enemy was near.

Possible runic inscription in Younger Futhark:ᚢᚠᚱᛁᚦᚱ

Also available in related dictionaries:

This headword also appears in dictionaries of other languages closely related to Old Icelandic.

• Old Norwegian - Johan Fritzner's Dictionary