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Definitions

laborious

[luh-bawr-ee-uhs] / ləˈbɔr i əs /
ADJECTIVE
hard, difficult
Synonyms
STRONGEST
arduous backbreaking burdensome onerous strenuous tiresome
WEAK
effortful fatiguing forced heavy herculean labored operose ponderous rough go stiff strained toilsome tough tough job wearing wearisome wicked
Antonyms
STRONGEST
easy facile
WEAK
effortless idle lackadaisical lazy reticent simple trivial
ADJECTIVE
hardworking
Synonyms
STRONGEST
assiduous painstaking
WEAK
active diligent indefatigable industrious operose persevering sedulous tireless unflagging
Antonyms
WEAK
easy effortless facile idle lackadaisical lazy reticent simple trivial

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“While we have tried to simplify the underlying concepts behind the Ontology model, building and implementing an Ontology in a large enterprise is a laborious process,” the analysts say.

From Barron's • Mar. 20, 2026

The pharma giants will still have other moats, notably the laborious regulatory and testing regime as well as distribution.

From MarketWatch • Mar. 17, 2026

And sometimes, that extra bit of effort just seems too laborious.

From Salon • Feb. 26, 2026

She wanted to digitise and streamline those laborious tasks into a piece of tech that she can view on her cellphone or computer.

From BBC • Jan. 19, 2026

The BFG gazed at her for a while longer, then he bent his head again to his slow laborious writing.

From "The BFG" by Roald Dahl

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.