monoculturist

Etymology tree
Proto-Indo-European *mender.
Proto-Hellenic *mónwos
Ancient Greek μόνος (mónos)
Ancient Greek μονο- (mono-)der.
English mono-
Proto-Indo-European *kʷelh₁-
Proto-Indo-European *kʷélh₁-e-ti
Proto-Italic *kʷelō
Latin colō
Proto-Indo-European *-tew-?
Proto-Indo-European *-r-eh₂?
Latin -tūra
Latin cultūrader.
Middle French cultureder.
English culture
English monoculture
Proto-Indo-European *-id-
Proto-Indo-European *-yéti
Proto-Indo-European *-idyéti
Proto-Hellenic *-íďďō
Ancient Greek -ῐ́ζω (-ĭ́zō)
Proto-Hellenic *-tās
Ancient Greek -τής (-tḗs)
Ancient Greek -ῐστής (-ĭstḗs)bor.
Latin -istader.
Old French -istebor.
Middle English -ist
English -ist
English monoculturist
From monoculture + -ist.