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

脊髄[sekizui] spinal cord
脊椎[sekitsui] spine
脊椎動物[sekitsuidoubutsu] vertebrate
猫脊[nekoze] bent back
脊広[sebiro] business suit

脊骨[sebone] spine
脊負う[shou] to be burdened with
無脊椎動物[musekitsuidoubutsu] invertebrate
脊柱[sekichuu] spinal column

お負けに[omakeni] to make matters worse
依怙贔負[ekohiiki] favoritism
一六勝負[ichirokushoubu] gambling
下請負[shitaukeoi] subcontract
夏負け[natsumake] suffering from summer heat

丸負け[marumake] complete defeat
気負い[kioi] fighting spirit
元請け負い人[motoukeoinin] master contractor
言負かす[iimakasu] to talk (a person) down
固定負債[koteifusai] fixed liabilities