banjax

/ˈbændʒæks/
verb
  1. To ruin, damage, or break something completely, often beyond repair.
    • I dropped my phone in the pool and totally banjaxed it.
    • He tried to fix the engine but only managed to banjax it further.
    • The storm banjaxed the old barn, leaving only a pile of wood.
  2. To confuse or frustrate someone, or to cause a plan to fail.
    • Her complicated explanation completely banjaxed me.
    • The power outage banjaxed the entire presentation.
    • The sudden change in schedule banjaxed all our arrangements.
Antonyms
What does "banjax" mean? | whatsthatwordmean | whatsthatwordmean