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

インフラ開発[infurakaihatsu] infrastructure development
エンジン発動機[enjinhatsudouki] engine
バス発着場[basuhacchakujou] depot
発条[bane] spring (e.g. coil, leaf)
ロケット発射筒[rokettohasshatou] rocket launcher

異常発生[ijouhassei] plague
一触即発[isshokusokuhatsu] critical (touch and go) situation
一念発起[ichinenhokki] being resolved to (do something)
一発[ippatsu] one shot
一発かます[ippatsukamasu] to hit someone

リーダーシップ的地位[riidaashipputekichii] leadership position
圧制的[asseiteki] oppressive
圧倒的[attouteki] overwhelming
圧倒的多数[attoutekitasuu] overwhelming numbers
意図的[itoteki] intentional

一義的[ichigiteki] unequivocable
一元的[ichigenteki] monistic
一時的[ichijiteki] temporary
一般的[ippanteki] popular
一般的なルールとして[ippantekinaruurutoshite] as a general rule