叛く[somuku] to run counter to
叛する[hansuru] to be contrary to
叛乱[hanran] insurrection
叛乱軍[hanrangun] rebel army
叛乱者[hanransha] rebel

叛意[hani] spirit of rebellion
叛軍[hangun] rebel army
叛将[hanshou] rebel leader
叛心[hanshin] rebellious spirit
叛臣[hanshin] rebellious retainer

鯔背[inase] gallant
違背[ihai] violation
棄背[kihai] giving up and turning back
向背[kouhai] one's attitude
上背[uwazei] stature

側背[sokuhai] flank
団栗の背比べ[dongurinoseikurabe] having no outstanding characteristics
中肉中背[chuunikuchuuzei] medium build
中背[chuuzei] average height
二律背反[niritsuhaihan] antinomy