1
[ adjective ] characterized by toilsome effort to the point of exhaustion; especially physical effort

Examples

"worked their arduous way up the mining valley" "a grueling campaign" "hard labor" "heavy work" "heavy going" "spent many laborious hours on the project"

Used in print

(John Harnsberger and Robert P. Wilkins,...)

By fall , 443 survivors of this arduous journey were clustered about Fort_Snelling , but most_of them were sent_on to Galena and St._Louis , with a few going as far as Vevay , Indiana , a notable Swiss center in the United_States .

Related terms

effortful

2
[ adjective ] taxing to the utmost; testing powers of endurance

Synonyms

straining strenuous

Examples

"his final, straining burst of speed" "a strenuous task" "your willingness after these six arduous days to remain here"- F.D.Roosevelt

Related terms

effortful

3
[ adjective ] difficult to accomplish; demanding considerable mental effort and skill

Examples

"the arduous work of preparing a dictionary"

Related terms

difficult

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