Meaning & use

laborious

adjective·Academic

Last updated

UK/ləˈbɔːriəs/
US/ləˈbɔːriəs/

Meanings

  1. adjectivecomparable

    Needing a lot of time, effort, and hard work.

    Grammar: Describes tasks or processes, not people: a laborious process. Comparative: more laborious.

    Patterns

    • a laborious task
    • a laborious process
    • laborious work

    Copying the data by hand was a laborious task.

    The process of applying for a visa can be laborious.

    They undertook the laborious job of cleaning the entire house.

  2. adjectivecomparable

    Showing hard work and effort, especially in writing or speech.

    Grammar: Often describes a style that seems too effortful: a laborious explanation.

    Patterns

    • a laborious style
    • a laborious explanation
    • laborious prose

    His laborious writing style made the book difficult to enjoy.

    The professor gave a laborious explanation that lasted an hour.

    The essay was laborious and lacked fluency.

Word forms

comparativemore laborious
superlativemost laborious

Common combinations

laborious task
Sorting the thousands of papers was a laborious task.
laborious process
Learning a language is a laborious process.
laborious work
Building the wall was laborious work.
laborious job
He found the job of cleaning the oven laborious.

Synonyms and how they differ

arduous
Suggests something is not only laborious but also difficult and demanding, often physically or mentally.
toilsome
More literary and old-fashioned; means the same as laborious but is rarely used in everyday speech.
strenuous
Emphasizes vigorous physical effort; laborious can also refer to mental effort.

Opposites

Word family

labor noun
Work, especially physical work.
laboriously adverb
In a way that takes a lot of effort.
laboriousness noun
The quality of being laborious.

Commonly confused: laborious or laboratory?

laborious vs laboratory

Laboratory is a place for scientific work; laborious means requiring much effort.

Practice

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