WordNet: arduous, straining, strenuous
taxing to the utmost; testing powers of endurance; "his final, straining burst of speed"; "a strenuous task"; "your willingness after these six arduous days to remain here"- F.D.Roosevelt"
- similar to effortful
arduous
- (englanti) arduousness (derivationally related)
- (suomi) vaativa (synonyymi)
- (suomi) rasittava (synonyymi)
straining
- (suomi) rasittava (synonyymi)
strenuous
- (englanti) strain (derivationally related)
- (englanti) strenuousness (derivationally related)
- (suomi) rasittava (synonyymi)