Wide-open (adjective)

1. Having a very broad or large opening.
2. Fully open.
3. Not closed or blocked.

Origin:

The phrase "wide-open" is a compound word made up of "wide" which means large, broad or extensive and "open" which means not closed or blocked. the phrase is thought to have originated in the early 17th century.

Examples:

1. The door was wide-open, and I could see inside the house.
2. The wide-open field stretched out before us.
3. The window was wide-open, letting in fresh air.
4. The wide-open mouth of the cave was intimidating.
5. He left the safe wide-open, and anyone could have taken the money.