unargumentative

Etymology tree
Proto-Indo-European *né
Proto-Indo-European *n̥-
Proto-Germanic *un-
Proto-West Germanic *un-
Old English un-
Middle English un-
English un-
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 unargumentative
From un- + argumentative.