laborious

adjective3

1. •
   Requiring much physical effort; toilsome.

   • Let us face it, our lives are miserable, laborious, and short. — 1943
2. •
   Mentally difficult; painstaking.
3. •
   Industrious.

   • All, with united Force, combine to drive / The lazy Drones from the laborious Hive. — 1697