Laborious

Antonyms for laborious:

easy, facile, simple, effortless.

Synonyms for laborious:

Sense 2

tall.

Sense 3

rigorous, exigent.

Sense 4

taxing, exacting.

Sense 5

serious.

detailed

elaborate.

disquieting

disturbing.

tough

hard going.

difficult (adjective)

grinding, cantankerous, troublesome, ticklish, finicky, difficult, toilsome, wearying, demanding, oppressive, hard, stiff, harsh, uphill, arduous, onerous, trying, rugged, thorny, wearisome, formidable, tight, strenuous, contrary, wearing, fussy, bothersome, tricky, cumbersome, rough, complicated, knotty, tough, complex, adverse, stressful, burdensome, severe.

effortful (adjective)

effortful.

hard, difficult (adjective)

labored, ponderous, wearisome, stiff, toilsome, strenuous, arduous, onerous, wearing, burdensome, effortful, tough, backbreaking, heavy.

hardworking (adjective)

diligent, assiduous, sedulous, active, industrious.

working (adjective)

laboring, working, toiling.

Sense 2 (noun)

exacting, rigorous, taxing, exigent.

industrious (noun)

active, diligent, assiduous.

laborious (noun)

grueling, arduous, labourious, backbreaking, effortful, hard, gruelling, punishing, toilsome, heavy.

Usage examples for laborious:

• This is appalling to a laborious writer, a student or a thinker. - "An Ocean Tramp", William McFee.
• These are the dreams of idle men, who love ludicrous ideas better than our laborious and industrious correction of the heavens. - "The Astronomy of Milton's 'Paradise Lost'", Thomas Orchard.
• These qualities of determination are particularly essential because of the fact that the process of improvement will necessarily be gradual and laborious rather than revolutionary. - "Complete State of the Union Addresses from 1790 to the Present", Various.