English Dictionary

when

/ʍɛn/

adv

(interrogative) At what time? At which time? Upon which occasion or circumstance? Used to introduce direct or indirect questions about time.

I will call you when I arrive.

意味（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?

意味（2）

At an earlier time and under different, usually less favorable, circumstances.

He's mister high and mighty now, but I remember him when.

意味（3）

(relative) At which, on which, during which: often omitted or replaced with that.

That was the day when the Twin Towers fell.

意味（4）

(fused relative) The time at, on or during which.

I recall when they were called the Greys.

意味（5）

(informal, in definitions or explanations) A circumstance or situation in which.

Love is when you can't get enough of someone.