Whilst definition

wīlst, hwīlst
Whilst is defined as while and refers to things going on at the same time as something else.

If you fall asleep as you are watching a movie, this is an example of a situation where you fall asleep whilst watching a movie.

conjunction
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(chiefly UK) While, at the same time.
conjunction
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conjunction
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While.
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Origin of whilst

  • Middle English whilest alteration of whiles whiles whiles

    From American Heritage Dictionary of the English Language, 5th Edition

  • From whiles +"Ž -t. Surface analysis while +"Ž -st (“(excrescence)"). Cognate with West Frisian wylst (“whilst"). More at whiles.

    From Wiktionary