when

  • adverb 1 at what time? 2 how soon? 3 in what circumstances? 4 at which time or in which situation.

  • conjunction 1 at or during the time that. 2 at any time that; whenever. 3 after which; and just then. 4 in view of the fact that. 5 although; whereas.

  — ORIGIN Old English.

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