when's

Adverb

when (not comparable)

1. (interrogative) At what time? At which time? Upon which occasion or circumstance? Used to introduce direct or indirect questions about time.
   • When will they arrive?
   1. (Internet, humorous, interrogative, often) Used after a noun or noun phrase in isolation to express impatience with an anticipated future event.
      • The site's all bugged. Fix when?
2. At an earlier time and under different, usually less favorable, circumstances.
   • He's mister high and mighty now, but I remember him when.
3. (relative) At which, on which, during which: often omitted or replaced with that.
   • That was the day when the Twin Towers fell.
4. (fused relative) The time at, on or during which.
   • I recall when they were called the Greys.
5. (informal) A circumstance or situation in which.
   • Love is when you can't get enough of someone.

See all 15 meanings of when