Úspilltr

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

úspilltr

pp. inviolate; unspoiled; taka til ~a mála, to fight out in real earnest.

Possible runic inscription in Younger Futhark:ᚢᛋᛒᛁᛚᛚᛏᚱ