over·board 
/ˈoʊvɚˌboɚd/ adverb
/ˈoʊvɚˌboɚd/ adverb : over the side of a ship into the water
▪ He threw/tossed the fish overboard. ▪ The boy fell overboard and almost drowned. ▪ One of the sailors fell into the water, and someone shouted “Man overboard!” — sometimes used figuratively ▪ The managers had to throw the plan overboard [=had to abandon the plan] because it was too expensive.
▪ He threw/tossed the fish overboard. ▪ The boy fell overboard and almost drowned. ▪ One of the sailors fell into the water, and someone shouted “Man overboard!” — sometimes used figuratively ▪ The managers had to throw the plan overboard [=had to abandon the plan] because it was too expensive.
go overboard
informal : to do something in a way that is excessive or extreme : to do too much of something
▪ Don't go overboard on/with the spices. [=do not add too many spices] ▪ She went overboard with the decorations.
▪ Don't go overboard on/with the spices. [=do not add too many spices] ▪ She went overboard with the decorations.
