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

此方[kochira] this way (direction close to the speaker or towards the speaker)
此方[konata] this way
此間[konaida] the other day
此の間[konokan] the other day
此の頃[konokoro] recently

此度[konotabi] this occasion
此の辺[konohen] this area
此から[korekara] after this
此れまで[koremade] hitherto
此等[korera] these

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