þystru

• þēostru, þēostro, þīostro, þȳstro

From þȳstre +‎ -u.

þȳstru f

1. darkness, gloom
   • 1921, Joseph Bosworth & Thomas Northcote Toller, An Anglo-Saxon Dictionary Online
     1. Þēof ðe on þȳstre færeþ, on sweartre niht.
2. dimness of sight or mind
   • 1921, Joseph Bosworth & Thomas Northcote Toller, An Anglo-Saxon Dictionary Online
     1. Wið ēagena þȳstru and genipe.

• deorcnes f (“darkness”)
• dīgol n (“darkness, a secret or hidden place, mystery”)
• dimnes f (“dimness, darkness, obscurity”)
• dimscūa m (“darkness, shadowiness”)
• forsworcennes f (“obscurity, darkness”)
• heolstorscūwa m (“dark shade, darkness”)
• mirce n (“murkiness, darkness”)
• nihtglōm m (“night gloom, darkness of night”)
• nihtscūa m (“shades or darkness of night”)
• ġenip n (“mist, darkness”)
• salnes f (“darkness”)
• þēostrung f (“darkness”)
• þēosterfullnes f (“darkness”)
• þrosm m (“smoke, darkness”)

• bearhtm m (“brightness”)
• beorht n (“brightness, glistening, splendor”)
• beorhtnes f (“brightness”)
• birhtu f (“brightness, splendor”)
• lēoma m (“light, beam of light, sheen, radiance”)
• līhtnes f (“lightness, brightness”)
• līxung f (“splendor, brightness”)
• scīma m (“splendor, brightness, light”)
• scīnness f (“splendor, brightness”)

• A Concise Anglo-Saxon Dictionary
• Bosworth-Toller Anglo-Saxon Dictionary
• Old English to Modern English Translator