Definition of whilst in English:

whilst

relative adverb & conjunction

British
  • While.

    although, even if, even though, in spite of the fact that, despite the fact that, notwithstanding the fact that, notwithstanding that, for all that, while, whilst, granted that, even supposing, despite the possibility that, albeit, however, yet, but
    View synonyms

Origin

Late Middle English: from whiles + -t as in against.

Pronunciation:

whilst

/wʌɪlst/