- assiduous
- diligent
- hard
- industrious
Synonyms for industrius
- difficilis – difficult, hard, troublesome
- diligens – careful, diligent
- durus – enduring, hard, harsh, rough, rude, strong, tough, uncouth
- edurus – hard
- ferreus – cruel, hard, made of iron, unbending, unfeeliing
- impiger – active, diligent, indefatigable
- laboriosus – industrious, laborious, toiling, toilsome