adverb
also therewhilst (ˈ) ̷ ̷| ̷ ̷
Etymology: therewhile from Middle English ther whyle, probably from Old English thǣre hwīle in that time, from thǣre (dative singular feminine of sē, sēo, thæt that) + hwīle, dative singular of hwīl while, time; therewhilst alteration (influenced by whilst ) of therewhile — more at that
obsolete : in the meantime : whilst