The story
- Anglo-Normanmotif
- Middle Frenchmotif
- Proto-Indo-European*m(y)ewh₁-
- Proto-Indo-European*m(y)owh₁éyeti
- Proto-Italic*moweō
- Latinmoveō
- Latinmōtus
- Late Latinmōtīvum
- Middle Englishmotif
- Englishmotive
- Englishmotivation
- Proto-Indo-European*lewh₁-
- Proto-Indo-European*lewHs-
- Proto-Germanic*leusaną
- Proto-Germanic*lausaz
- English todaymotivationless
From motivation + -less.
Etymology from Wiktionary, CC BY-SA 4.0.