From unz + daz. Compare Old Saxon untat, Old English oþþæt. <span class="searchmatch">untaz</span> until...
ōþ þæt From ōþ + þæt. Compare Old Saxon untat, Old High German <span class="searchmatch">untaz</span>. IPA(key): /ˈoːθ.θæt/ ōþþæt until 10th century, The Wanderer: Beorn sċeal ġebīdan...
unthat untthat From und + that. Compare Old English oþþæt, Old High German <span class="searchmatch">untaz</span>. untat until Köbler, Gerhard (2014) Altsächsisches Wörterbuch[1] (in German)...