In nouther avaunt ne rere: not at all, neither in front nor behind. See arrearadv.In quot. perhaps in the sense ‘neither sooner nor later’.
ΚΠ
a1450 (c1412) T. HoccleveDe Regimine Principum (Harl. 4866) (1897) 1247 ‘Wisseth me how to gete a golden salue, And what I haue, I wele it with yow halue.’ ‘Sone, as for me, nouthir avaunte ne rere [rhyme leere].’