お遣い[otsukai] errand
遣り繰り[yarikuri] making do
遣り取り[yaritori] giving and taking
遣り方[yarikata] manner of doing
遣る[yaru] to send

遣す[yokosu] to send
為て遣る[shiteyaru] to do for (someone)
かな遣い[kanazukai] kana orthography
気遣い[kizukai] consideration
気遣う[kizukau] to worry about

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

阿諛追従[ayutsuishou] excessive flattery
位記追贈[ikitsuisou] conferment of posthumous rank
犬追物[inuoumono] dog-hunting event of Kamakura period
幻を追う[maboroshiwoou] to pursue an illusion
後追い[atooi] following someone

後追い自殺[atooijisatsu] following someone's example, and committing suicide
公職追放[koushokutsuihou] purge of public officials
鹿追[shikaoi] hinged bamboo water cup or trough, which makes a percussive sound periodically as it tips over
戦没者追悼記念日[senbotsushatsuitoukinenbi] Memorial Day (US)
訴追[sotsui] legal action

迚も[totemo] very
迚もじゃないが[totemojanaiga] (before a negative form) simply (cannot)

迚も迚も[totemototemo] (before a negative form) simply (cannot)