arduous in Dutch
arduous in Dutch
zwaar
Needing or using up much energy; testing powers of endurance.
moeizaam
Needing or using up much energy; testing powers of endurance.
uitputtend
Needing or using up much energy; testing powers of endurance.
moeilijk te beklimmen
Difficult or exhausting to traverse.
steil
Difficult or exhausting to traverse.
uitputtend
Difficult or exhausting to traverse.
zwaar
Difficult or exhausting to traverse.