sör (OSw) særr (ON) sǿrr (ON) adj.

Derived from a verb realized in OSw as sværia (ON sverja) ‘to swear’. Appearing in ONorw GuL and OSw ÖgL in the phrase sǿrr dagr (ON)/sör dagher (OSw) ‘oath day’ of a day when swearing an oath was allowed or possibly even prescribed.

oath-taking OIce Jó Þfb 1 Llb 30, 39
OIce Js Þfb 1
OIce KRA 29
ONorw FrL KrbB 20
ONorw MLL Þfb 1 Llb 28, 37
Expressions:

sör dagher (OSw) sǿrr dagr (ON)

oath day ONorw GuL Krb, Løb, Llb, Tfb, Leb OSw ÖgL Jb