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English to English adjective
| 1 |
Steep and lofty, in a literal sense; hard to climb. |  | source: webster1913 adjective satellite
| 2 |
characterized by effort to the point of exhaustion; especially physical effort | | Example: worked their arduous way up the mining valley
a grueling campaign
hard labor
heavy work
heavy going
spent many laborious hours on the project
set a punishing pace
source: wordnet30
| 3 |
taxing to the utmost; testing powers of endurance | | Example: his final, straining burst of speed
a strenuous task
your willingness after these six arduous days to remain here
source: wordnet30
| 4 |
difficult to accomplish; demanding considerable mental effort and skill | | Example: the arduous work of preparing a dictionary
source: wordnet30
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