Aga

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

aga

v. impers., nú agir við, now there is a great uproar.

Possible runic inscription in Younger Futhark:ᛅᚴᛅ

Also available in related dictionaries:

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

• Old Norse - Cleasby & Vigfusson Dictionary
• Old Norwegian - Johan Fritzner's Dictionary