Describes someone who works hard or something that requires a lot of effort.
Su trabajo era trapajoso, pero a ella le gustaba la satisfacción que le daba al finalizar cada proyecto.
Her work was laborious, but she enjoyed the satisfaction it gave her upon completing each project.
El trabajo era tan trapajoso que muchos decidieron dejarlo para otro día.
The work was so laborious that many decided to leave it for another day.