[8] grandaðr ‘injurer’: Printed in older eds as grǫnduðr, but there is no ground for alteration of the ms. spelling here, and ÍF 26, ÍF 29, Hkr 1991 all print grandaðr. This type of agentive noun can be formed with either -aðr or -uðr, the latter with mutation of a in the root syllable to ǫ.