unmotivated

adjective2

1. •
   Lacking motivation, without impetus to strive or excel.

   • When a typically chatty employee who often participates in meetings and is engaged and enthusiastic suddenly becomes unmotivated and quieter, that person could be at risk for burnout. — 2019
2. •
   For which there is no motive, or no apparent rational motive.

   • An inherited etymology should not involve too many unmotivated irrregular sound changes aor ^([sic]) non-trivial semantic shifts. — 2025