overargumentative

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-
Latin arguō
Proto-Indo-European *-mn̥
Proto-Indo-European *-mn̥tom
Proto-Italic *-mentom
Latin -mentum
Latin argūmentum
Proto-Indo-European *-h₂
Proto-Indo-European *-éh₂
Proto-Indo-European *-yéti
Proto-Indo-European *-eh₂yéti
Proto-Italic *-āō
Latin -ō
Latin argūmentor
Proto-Indo-European *-wós
Proto-Indo-European *-iHwósder.
Latin -īvus
Medieval Latin argūmentātīvusder.
Middle English argumentatif
English argumentative
English overargumentative
From over- + argumentative.