Overboard (adverb)

1. Out of or beyond the side of a ship, boat, or similar vessel into the water.
2. Beyond reasonable or acceptable limits; excessively.

Origin:

The word 'overboard' is derived from the adjective 'over' meaning 'across or above' and the noun 'board' meaning 'a flat piece of timber or similar material used as a surface for working on or for some other purpose'. it has been in use since the 16th century.

Examples:

1. He accidentally fell overboard and had to be rescued by a passing boat.
2. The crew threw the damaged equipment overboard to lighten the ship.
3. She went overboard with her spending during the holidays.
4. He went overboard in his efforts to impress his boss.
5. The new regulations are going overboard and are too restrictive for businesses.