overboard

(adjective, adverb)

adjective

1. Outside of a boat, in the water

adverb

1. to extremes

- he went overboard to please his in-laws

2. from on board a vessel into the water

- they dropped their garbage overboard

Sentences with overboard as an adverb:

- It was their practice to throw the scraps overboard.

- They really went overboard with the party preparations.