What word has the opposite meaning to late?

The opposite of "late" depends on the context. Here are a few possibilities:

* Early: This is the most common opposite and refers to being on time or ahead of schedule.

* Prompt: This implies being on time and not delaying.

* On time: This is straightforward and simply means arriving or happening at the scheduled time.

* Ahead of schedule: This means completing something sooner than expected.

* Fast: This can refer to speed, but can also be used to describe something happening quickly, like a fast recovery.

The best word to use will depend on the specific situation.