断トツ[dantotsu] the best
一刀両断[ittouryoudan] cutting in two with a single stroke
引っ張り剪断強度[hipparisendankyoudo] peel strength (conductor from substrate)
英断[eidan] resolution
横断[oudan] crossing

横断歩道[oudanhodou] pedestrian crossing
果断[kadan] decisive
間断[kandan] break in time
強制中断[kyouseichuudan] forcing to a stop
禁断[kindan] prohibition

この結果[konokekka] consequently
芒果[mangoo] mango
悪因悪果[akuinakka] sowing and reaping evil
悪果[akka] bad results
圧電効果[atsudenkouka] piezoelectric effect

為果せる[shiooseru] to accomplish
因果[inga] cause and effect
因果関係[ingakankei] consequence
因果者[ingamono] unlucky person
果せる[ooseru] to succeed in doing

獅子奮迅[shishifunjin] being irresistible
疾風迅雷[shippuujinrai] with lightning speed
迅速[jinsoku] quick
迅雷[jinrai] thunderclap
奮迅[funjin] impetuous dash forward

無常迅速[mujoujinsoku] the (fast) pace at which life passes, and thus the nearness of death
獅子奮迅の勢い[shishifunjinnoikioi] irresistible force
迅速果断[jinsokukadan] quick and decisive
迅速果敢[jinsokukakan] quick and decisive

逸速く[ichihayaku] promptly
音速[onsoku] speed of sound
加速[kasoku] acceleration
加速運動[kasokuundou] accelerated motion
加速度[kasokudo] acceleration

快速[kaisoku] high speed
快速電車[kaisokudensha] high-speed train
角速度[kakusokudo] angular velocity
急速[kyuusoku] rapid (e.g. progress)
減速[gensoku] deceleration