Literally "for the time that...", using the accusative of duration.

IPA^(key):/θɑː ˈxwiː.le θe/,[θɑː ˈʍiː.le θe]

þāhwīleþe

1. while
   • "Gospel of Saint John", chapter 9, verse 4

     Mē ġebȳrað tō wyrceanne þæs weorc þe mē sende,þā hwīle þe hit dæġ is; niht cymþ, þonne nān man wyrcan ne mæġ.

     It behoves me to work work of that which sent to me,while it is day; night comes, then no one can work.

   • c. 995,Ælfric,Extracts on Grammar in English

     Iċ rēdþā hwīle þe þū ǣte.

     I readwhile you were eating.

2. as long as
   • late 9th century,King Alfred'stranslation ofThe Consolation of Philosophy

     Þæt is nū hraðost tō seċġenne þæt iċ wilnode weorþfullīċe tō libbenneþā hwīle þe iċ lifde, and æfter mīnum līfe þām mannum tō lǣfanne þe æfter mē wǣren mīne ġemynd on gōdum weorcum.

     In short, I wanted to live honorablyas long as I lived, and to leave behind, for those who would come after me, the memory of me in good works.