Rigsa

As defined by the Cleasby & Vigfusson Old Norse to English dictionary:

rigsa

að, to stalk stiffly and haughtily, = reigsa.

Possible runic inscription in Younger Futhark:ᚱᛁᚴᛋᛅ
Younger Futhark runes were used from 8th to 12th centuries in Scandinavia and their overseas settlements