un-fyrn
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-fyrn
. I. AddHé wæs nú unfyrn (nú for lyttlum fyrste, v.l.) forðféred ante non longum tempus defunctus est, Gr. D. 71, 18. II. add "Hé deád byð unfyrn" . . . þírn ódran dæge æfter þæs Godes weres cwide hé his líf geendode, 62, 28. Þú wást ic sylfa unfyrn sceall beón sweltende scis quia ego modo te (the dying abbot) secuturus sum 226, 4.
This is a supplementary entry with editorial changes to an entry in the main volume of the dictionary. Look under the 'Possibly connected entries' below, or for the same headword in the list to the left.

A Combined List of Abbreviations.

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A Combined List of Abbreviations.