Laborious

1.

(requiring much labor, exertion or perseverance; of extreme care, diligent in labor. -labor union trade union, organization of employees a for mutual assistance and protection) laborious task ដែលពិបាក, ដ៏ពិបាក, laborious craftsmanship ដែលផ្ចិតផ្ចង់

1.

Requiring labor, perseverance, or sacrifices; toilsome; tiresome.

2.

Devoted to labor; diligent; industrious; as, a laborious mechanic.