挑む[idomu] to challenge
挑戦[chousen] challenge
挑戦者[chousensha] challenger
挑撥[chouhatsu] provocation
挑発的[chouhatsuteki] provocative

挑戦状[chousenjou] written challenge
戦いを挑む[tatakaiwoidomu] to challenge (a person) to a fight
戦争挑戦国[sensouchousenkuni] warmonger
挑戦いかに[chousenikani] How dare you!
戦争挑発[sensouchouhatsu] aggression

撥条[zenmai] spring (e.g. coil, leaf)
ピン撥ね[pinhane] (taking a) kickback
挑撥[chouhatsu] provocation
撥ね[hane] (a) jump
撥ね除ける[hanenokeru] to push aside

反撥[hanpatsu] to repel
目撥[mebachi] bigeye tuna (edible fish, Thunnus obesus)
撥ね飛ばす[hanetobasu] to send (something) flying
撥ねつける[hanetsukeru] to repel