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arduous

arduous

29 7.7
Very difficult to do and needing a lot of effort over a long time
  • adjective
  • /ˈɑrdʒuəs/
translation icon : arduo
  • Completing the marathon was an arduous test of endurance and strength.
  • an arduous journey
  • an arduous task
  • an arduous process

This is going to be a long, arduous process.

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Examples

  • For Ryan, the first day of sixth grade marked the start of a long and arduous personal journey.

    Academic text (2013)
  • But it was an incredibly arduous journey to get to this place every day.

  • This is going to be a long, arduous process.

  • It's been years of what must feel like an arduous battle for you.

  • Your long, arduous journey is over.

  • Years of keen study and arduous work are essential.

  • The approval process for strategic plans can be arduous, but it will ensure commitment to a single vision.

    Academic text (1993)
  • If the snow kept up, even getting back to Cold Spring might be an arduous undertaking.

    Fiction book (1999)
  • Performance assessment does not have to be a long, arduous process if it is part of the everyday classroom routine.

    Academic text (2012)
  • Undoing the influence of such pseudoscience is going to be a long and arduous process.

Synonyms

hard
vsarduous
1.1

Needing a lot of effort and often strict or severe

is similar but often implies a longer, more draining challenge
difficult
vsarduous
1.6

Not easy to do or understand

is like this but highlights prolonged effort often reaching exhaustion
heavy
vsarduous
221 2.1

Hard to do or understand

is similar but typically implies longer sustained difficulty toward exhaustion
challenging
vsarduous
183 4.4

Hard to do and needing a lot of effort

is similar but stresses extended hardship and draining effort more
exhausting
vsarduous
92 3.2

To make you feel very tired

is about severe difficulty that often leads to that deep tiredness
ambitious
vsarduous
84 3.9

Needing a lot of skill, effort, or money to succeed

is focused more on long, tiring effort and physical or mental exhaustion
strenuous
vsarduous
34 4.9

Needing a lot of effort or energy

is similar but stresses long duration and possible exhaustion more
grueling
vsarduous
30 7.0

Very hard and tiring, needing a lot of physical effort

is similar but focuses on long, very demanding effort until exhaustion
burdensome
vsarduous
18 7.1

Causing a lot of extra work or worry

is more about long, exhausting effort rather than emotional burden alone
labor-intensive
vsarduous
  • Specialized
15 5.3

Needing a lot of work by people rather than machines

is similar in effort but highlights long duration and severe tiredness
rugged
vsarduous
14 5.3

Very difficult and needing a lot of strength to keep going

is like this but often indicates long duration leading to exhaustion
herculean
vsarduous
  • Formal
11 8.4

Very difficult and needing great strength or effort

shares high difficulty but emphasises long endurance rather than heroism
laborious
vsarduous
10 6.8

A task or process that needs a lot of time and hard work

is more intense, stressing prolonged hardship and possible exhaustion
taxing
vsarduous
5 6.8

Needing a lot of physical or mental effort

is like this but usually implies a longer, more wearing struggle
tough going
vsarduous
  • Informal
4 5.3

A situation or task that is hard to do

is like this but emphasizes prolonged, exhausting effort rather than temporary difficulty
effortful
vsarduous
1 6.9

Needing a lot of physical or mental work

is similar but focuses more on long duration and severe tiredness
backbreaking
vsarduous
1 5.8

Very hard physical work that makes your body tired

is similar but can also include prolonged mental effort not only physical
straining
vsarduous
1 5.0

Needing a lot of effort and making you very tired

is similar but often focuses on long, draining effort rather than a peak test
trying
vsarduous
1 5.1

Hard to deal with and making people feel tired or annoyed

is more about sustained, intense effort that leads to exhaustion
toilsome
vsarduous
1 8.9

Needing a lot of hard work and making you tired

stresses sustained difficulty that leads toward exhaustion rather than brief strain
punishing
vsarduous
6.5

Hard to do and leaves you very tired

is about very hard effort often over time rather than cruelty
operose
vsarduous
  • Formal
9.9

Needing a lot of hard work and careful attention

is similar but highlights long, wearing effort rather than careful detail
demanding
vsarduous
4.1

Needing a lot of time, effort, or attention

is like this but emphasises extended, exhausting effort over time

Antonyms

1.0

Not hard to do, understand, or achieve

1.0

Easy to understand or do

26 2.6

Done easily and smoothly without hard work

How Hard

backbreaking
1 5.8
grueling
30 7.0
arduous
29 7.7
difficult
1.6
challenging
183 4.4
easy
1.0

Surface Forms

arduous positive
arduouser comparative
arduousest superlative

Morphology

arduous = ardu + ous

Although the suffix '-ous' is productive, the stem 'ardu' is not a recognizable modern English base, so learners cannot derive the meaning from known English components.

Etymology

Arduous comes from the old Latin word arduus, which meant 'steep' or 'hard to climb'. So an arduous task is like climbing a very steep hill: it is very difficult and needs a lot of effort.