Etymology tree Ancient Greek ψῡχή (psūkhḗ) Ancient Greek ψῡχο- (psūkho-)der. English psycho- Ancient Greek πάσχω (páskhō)der. Ancient Greek πᾰ́θος (pắthos) Proto-Indo-European *-ikos Proto-Italic *-ikos Latin -icuslbor. Old French -iquebor. Middle English -ik English -ic English -pathic English psychopathic From psycho- + -pathic.