Twice (adverb)

On two occasions.

Origin:

From old english twīce.

Examples:

1. I've told you twice to clean your room.
2. She ate twice as much as usual.
3. The recipe says to bake for an hour, but my cake was ready after only 30 minutes, twice as fast.
4. He visited his grandmother twice a week.
5. I need to buy two tickets, one for me and one for my sister, twice the cost of one.