Laborious a. : Requiring labor, perseverance, or sacrifices; toilsome; tiresome.

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

Example:
can doing Laborious work every day keep you in shape?

Taxonomy
Merriam-Webster Online Dictionary, Dictionary, webster, Word Games, Webster Online Dictionary with audio pronunciations, Custom Search, glossary, english, language, ESL, Search, adjective, 14th century, ly, adverb, ness, Unabridged Dictionary, Open Dictionary.

Defination from the web:
laborious from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. ... Learn more about "laborious" with Google Search >> Custom Search. Learn more about "laborious" and related topics at Britannica.com ...