a. Obs. [UN-1 7. Cf. OE. unʓesib, OHG. unsibbi, -sippi (MHG. unsippe), Goth. unsibjis.] Not related, not of kin. In quots. absol.
c. 1200. Ormin 2474. And ȝhot [= she it] forrhall wiþþ alle menn Wiþþ sibbe & wiþþ unnsibbe.
1303. R. Brunne, Handl. Synne, 1198. To holy land, ȝyf þou haue hyt hette; Syb, ne vnsyb, may hyt lette.
