adjective. Marked by or requiring long, hard work.

adjective. Hard-working; industrious.

Requiring much labor, exertion, or perseverance; toilsome; not easy: as, laborious duties; a laborious undertaking.

Using exertion; practising labor; diligent in work or service; assiduous: as, a laborious husbandman or mechanic; a laborious minister or pastor.

Characterized by labor or effort; marked by or manifesting labor.

Synonyms Difficult arduous, wearisome, fatiguing, onerous.

Industrious, painstaking, active, hard-working.

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

adjective. Devoted to labor; diligent; industrious.

adjective. Requiring much physical effort; toilsome.

adjective. Mentally difficult; painstaking

adjective. Industrious.

adjective. characterized by effort to the point of exhaustion; especially physical effort

"The unfortunate reputation that writing often bears as being boring and laborious is likely a result of people writing about uninteresting topics and doing so only out of necessity."

industrious  

effortful  

glorious  inglorious  meritorious  notorious  victorious  

arduous  careful  difficult  hazardous  humble  

Herculean  abstruse  ardent  arduous  assiduous