arduous

Speech parts

1. arduous - Adjective

2. arduous - Adjective Satellite

Steep and lofty, in a literal sense; hard to climb.

Attended with great labor, like the ascending of acclivities; difficult; laborious; as, an arduous employment, task, or enterprise.

Source: Webster's dictionary

laborious hard strenuous exhausting difficult heavy trying demanding painful punishing burdensome straining onerous toilsome grueling

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royal simple silken easy soft smooth

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arduity

the arduous work of preparing a dictionary Source: Internet

worked their arduous way up the mining valley Source: Internet

a grueling campaign Source: Internet

hard labor Source: Internet

heavy work Source: Internet

heavy going Source: Internet