overconsumer

Etymology tree
Proto-Indo-European *úp
Proto-Indo-European *-er
Proto-Indo-European *upér
Proto-Germanic *uber
Old English ofer-
Middle English over-
English over-
Proto-Indo-European *ḱe?
Proto-Indo-European *ḱóm
Proto-Italic *kom
Proto-Italic *kom-
Latin con-
Proto-Indo-European *upó
Proto-Italic *supo
Latin sub
Latin sub-
Proto-Indo-European *h₁em-der.
Proto-Italic *emō
Latin emō
Latin sūmō
Latin cōnsūmōder.
Old French consumerbor.
Middle English consumen
English consume
English overconsume
Proto-Indo-European *-yósder.
Proto-Italic *-āzijos
Latin -āriusnom.
Latin -āriusbor.
Proto-Germanic *-ārijaz
Proto-West Germanic *-ārī
Old English -ere
Middle English -ere
English -er
English overconsumer
From overconsume + -er.