古往今来[kooukonrai] in all ages
古今[kokon] ancient and modern times
古今東西[kokontouzai] all times and places
古今無類[kokonmurui] best ever

今か今か[imakaimaka] eagerly waiting
今が今[imagaima] just now
今が今まで[imagaimamade] till just now
今しがた[imashigata] moment ago

緩衝[kanshou] buffered
緩衝器[kanshouki] shock absorber
緩衝地帯[kanshouchitai] buffer zone
刺衝[shishou] stabbing
衝撃[shougeki] shock

衝撃波[shougekiha] shock wave
衝動[shoudou] impulse
衝動行為[shoudoukoui] shock action
衝動買い[shoudougai] impulsive buying
衝突[shoutotsu] collision

此れ迄[koremade] hitherto
迄に[madeni] by
何時迄[itsumade] how long?
何時迄も[itsumademo] forever
何時何時迄も[itsuitsumademo] indefinitely

何処迄[dokomade] how far
何処迄も[dokomademo] anywhere
完膚無き迄[kanpunakimade] completely
言う迄もない[iumademonai] it goes without saying
飽く迄[akumade] to the end