overboard
1. [ adverb ] to extremes
Examples:

"he went overboard to please his in-laws"

2. [ adverb ] from on board a vessel into the water
Examples:

"they dropped their garbage overboard"

Similar spelling:   overbold
  overbear
  overproud
  overburden
  overbid
  overproduce
  overfond
  overboil
  overburdened
  overpower
  Overby
  overprotect
  Overbey
  overbearing
  Overbay
  overbalance