psychopathological

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 *leǵ-
Ancient Greek λόγος (lógos)
Proto-Indo-European *-h₂
Proto-Indo-European *-éh₂
Proto-Indo-European *-i-eh₂
Proto-Hellenic *-íā
Ancient Greek -ῐ́ᾱ (-ĭ́ā)
Ancient Greek -λογῐ́ᾱ (-logĭ́ā)bor.
Latin -logialbor.
French -logie
French pathologiebor.
English pathology
English psychopathology
Proto-Indo-European *-ikos
Proto-Italic *-ikos
Latin -icuslbor.
Old French -iquebor.
Middle English -ic
Proto-Indo-European *h₂el-der.?
Proto-Italic *-ālis
Latin -ālisbor.
Old French -albor.
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Latin -ālis
Old French -elbor.
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Latin -ālisbor.
Middle English -al
Middle English -ical
English -ical
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English psycho-
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English pathology
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English -ical
English pathological
English psychopathological
From psychopathology + -ical, or from psycho- + pathological.