Definitions
At what time, at the time that, or during the period in which something happens.
Word origin
From Middle English when(ne), whan(ne), from Old English hwonne, from Proto-West Germanic *hwannē, from Proto-West Germanic *hwan, from Proto-Germanic *hwan (“at what time, when”), from Proto-Indo-European *kʷís (interrogative base).
Used in a sentence
“When will they arrive?”
“Do you know when they arrived?”
“I don't know when they arrived.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer2 curated clues
01“Time of occurrence”4 letters
02“At what time”4 letters
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