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

一念発起[ichinenhokki] being resolved to (do something)
引き起す[hikiokosu] to cause
縁起[engi] omen
喚起[kanki] arousal
起きる[okiru] to get up

起上る[okiagaru] to rise
起す[okosu] to raise
起こり得る[okoriuru] to be possible to occur
起る[okoru] to occur
起つ[tatsu] to rise up

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