un-myndlinga
This might be just a supplemental entry adding to an entry in the Main Volume.
In the OE text, the length is:indicated by acute accentsindicated by macronsnot indicated.
un-myndlinga
. I. AddSume dæge þá þá heó swá wídgál swíde dwolode, heó becóm unmyndlinga tó þám scræfe . . . and heó þá þǽr wunode swá swá heó nyste quadam die dum vaga nimium erraret ad specum devenit, ibique nesciens ingressa mansit, Gr. D. 176, 21. II. AddGelamp hit se sácerd unmyndlinga (unwénlíce, v.l., inopinate) wearð ábysgod wíneard tó settanne, Gr. D. 88, 16.
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.