motivelessness

Etymology tree
Anglo-Norman motifder.
Middle French motifder.
Proto-Indo-European *m(y)ewh₁-der.
Proto-Italic *moweō
Late Latin moveō
Late Latin mōtus
Proto-Indo-European *-wós
Proto-Indo-European *-iHwósder.
Late Latin -īvus
Late Latin mōtīvumder.
Middle English motif
English motive
Proto-Indo-European *lewh₁-
Proto-Indo-European *lewHs-der.
Proto-Germanic *leusaną
Proto-Germanic *lausaz
Proto-Germanic *-lausaz
Proto-West Germanic *-laus
Old English -lēas
Middle English -les
English -less
English motiveless
Proto-Germanic *-in-
Proto-Indo-European *-h₂
Proto-Indo-European *-éh₂
Proto-Indo-European *-yéti
Proto-Indo-European *-eh₂yéti
Proto-Indo-European *-h₂ti
Proto-Germanic *-ōną
Proto-Germanic *-inōną
Proto-Indo-European *-dyé-
Proto-Germanic *-atjaną
Proto-Indo-European *-tus
Proto-Germanic *-þuz
Proto-Germanic *-assuz
Proto-Germanic *-inassuz
Proto-West Germanic *-nassī
Old English -nes
Middle English -nesse
English -ness
English motivelessness
From motiveless + -ness.