i-adjective
Describes low speed of movement, action, or progress. Can refer to physical slowness or mental dullness.
このパソコンは動きが遅い。
This computer is slow.
彼は足が遅い。
He is a slow runner.
i-adjective
Indicates that something happens after the expected or usual time. Often used with time expressions.
今朝は起きるのが遅かった。
I got up late this morning.
電車が遅い。
The train is late.
i-adjective
too late
Used in expressions like もう遅い or もはや遅い to mean that the opportunity has passed or it is no longer possible to act.
今さら謝ってももう遅い。
It's too late to apologize now.
今から出発しても、会議には遅い。
Even if we leave now, we'll be too late for the meeting.