謂われ[iware] reason
謂わば[iwaba] so to speak
所謂[iwayuru] what is called
謂う[iu] to say
謂う所の[iutokorono] what is called

過ちて改めざる是を過ちと謂う[ayamachitearatamezarukorewoayamachitoiu] to err and not change one's ways, this is what it is to err (from Analects of Confucius)
謂れない[iwarenai] unjustified
謂れ因縁[iwareinnen] origin
謂れのない[iwarenonai] unjustified

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