linguistic:voice_change, information:classification, linguistic:paraphrasing, stylistic:style_transfer
Orthography

Old English was first written in runes, using the futhorc —a rune set derived from the Germanic 24-character elder futhark, extended by five more runes used to represent Anglo-Saxon vowel sounds and sometimes by several more additional characters. From around the 8th century, the runic system came to be supplanted by a (minuscule) half-uncial script of the Latin alphabet introduced by Irish Christian missionaries. This was replaced by Insular script, a cursive and pointed version of the half-uncial script. This was used until the end of the 12th century when continental Carolingian minuscule (also known as Caroline) replaced the insular.

The Latin alphabet of the time still lacked the letters ⟨ j ⟩ and ⟨ w ⟩, and there was no ⟨ v ⟩ as distinct from ⟨ u ⟩; moreover native Old English spellings did not use ⟨ k ⟩, ⟨ q ⟩ or ⟨ z ⟩. The remaining 20 Latin letters were supplemented by four more: ⟨ æ ⟩ (æsc, modern ash) and ⟨ ð ⟩ (ðæt, now called eth or edh), which were modified Latin letters, and thorn ⟨ þ ⟩ and wynn ⟨ ƿ ⟩, which are borrowings from the futhorc. A few letter pairs were used as digraphs, representing a single sound. Also used was the Tironian note ⟨ ⁊ ⟩ (a character similar to the digit 7) for the conjunction and. A common scribal abbreviation was a thorn with a stroke ⟨ ꝥ ⟩, which was used for the pronoun þæt (that). Macrons over vowels were originally used not to mark long vowels (as in modern editions), but to indicate stress, or as abbreviations for a following ⟨ m ⟩ or ⟨ n ⟩.

Modern editions of Old English manuscripts generally introduce some additional conventions. The modern forms of Latin letters are used, including ⟨ g ⟩ instead of insular G, ⟨ s ⟩ instead of insular S and long S, and others which may differ considerably from the insular script, notably ⟨ e ⟩, ⟨ f ⟩ and ⟨ r ⟩. Macrons are used to indicate long vowels, where usually no distinction was made between long and short vowels in the originals. (In some older editions an acute accent mark was used for consistency with Old Norse conventions.) Additionally, modern editions often distinguish between velar and palatal ⟨ c ⟩ and ⟨ g ⟩ by placing dots above the palatals: ⟨ ċ ⟩, ⟨ ġ ⟩. The letter wynn ⟨ ƿ ⟩ is usually replaced with ⟨ w ⟩, but ⟨ æ ⟩, ⟨ ð ⟩ and ⟨ þ ⟩ are normally retained (except when ⟨ ð ⟩ is replaced by ⟨ þ ⟩).

In contrast with Modern English orthography, Old English spelling was reasonably regular, with a mostly predictable correspondence between letters and phonemes. There were not usually any silent letters —in the word cniht, for example, both the ⟨ c ⟩ and ⟨ h ⟩ were pronounced (/knixt ~ kniçt/) unlike the ⟨ k ⟩ and ⟨ gh ⟩ in the modern knight (/naɪt/). The following table lists the Old English letters and digraphs together with the phonemes they represent, using the same notation as in the Phonology section above.

Doubled consonants are geminated; the geminate fricatives ⟨ ff ⟩, ⟨ ss ⟩ and ⟨ ðð ⟩ / ⟨ þþ ⟩ / ⟨ ðþ ⟩ / ⟨ þð ⟩ are always voiceless,,.