sluggard
/ˈslʌɡərd/
noun
- A lazy, slow-moving person who avoids work or effort.
- In the fable, the ant works all summer while the sluggard plays and suffers in winter.
- Don't be a sluggard—help your teammates finish the project.
- The manager warned the sluggard that he would be fired if he didn't start working harder.
Antonyms