banjax /ban-jaksˈ or banˈ/ (slang)

1. To ruin, destroy
2. To thwart

• brainbox
• brainboxes
• braincase
• braincases
• brainchild
• brainchildren
• brain coral
• brain corals
• brain damage
• brain-damaged
• brain-dead
• brain death
• brain deaths
• brain drain
• brain drains
• brained
• brain fag
• brain fever
• brain-fever bird
• brain-fever birds
• brain fevers
• brainiac
• brainiacs
• brainier
• brainiest