un-geþwǽrness
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-geþwǽrness
Add:III. violence, cruelty Þætte se nama ðiǽre Rómániscan ðeóde fram fremdra ðeóda ungeþwǽrnesse fornumen beón ne sceolde ne nomen Romanae prouinciae exterarum gentium improbitate obrutum uilesceret, Bd. l, 12; Sch. 33, 4.
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.