- requiring great exertion; laborious; difficult: an arduous undertaking.
- requiring or using much energy and vigor; strenuous: making an arduous effort.
- hard to climb; steep: an arduous path up the hill.
- hard to endure; full of hardships; severe: an arduous winter.
Origin of arduous
SynonymsSee more synonyms for arduous on Thesaurus.com
Examples from the Web for arduousness
They vary in arduousness: all would be marked "heavy work" in a job specification.Steel
Charles Rumford Walker
They know the arduousness of life, which is a lesson we must all learn sooner or later.The Half-Hearted
No one has rightly entered on the office without being deeply impressed by its greatness, arduousness, and responsibility.Life and Work in Benares and Kumaon, 1839-1877
They scarcely shrink from any business on account of its magnitude, its arduousness, or its hazard.Thoughts on Missions
Though not comparing with the arduousness of field service, our duties were by no means slight.Reminiscences of two years with the colored troops
Joshua M. Addeman
- requiring great physical or mental effort; difficult to accomplish; strenuous
- hard to endure; harsharduous conditions
- hard to overcome or surmount; steep or difficultan arduous track
Word Origin and History for arduousness
1530s, "hard to accomplish, difficult to do," from Latin arduus "high, steep," also figuratively, "difficult," from PIE root *eredh- "to grow, high" (see ortho-). Literal sense of "high, steep, difficult to climb," attested in English from 1709.