whilst

Origin: From Late , whilest, qwhilste (Northern England), quilest (Northwest Midlands), from whiles + -t. Whiles is derived from whiles (probably from the second element of s and s like otherwhiles and somewhiles), from while + -s; and while is from , ultimately from , from . The English word can be analysed as . *. Origin information sourced from Wiktionary contributors (CC BY-SA 4.0).