Arduous
"Arduous" in Dutch
moeilijk te beklimmen
(hard to climb or traverse)
moeizaam
(needing or using up much energy)
steil
(hard to climb or traverse)
uitputtend
(needing or using up much energy)
uitputtend
(hard to climb or traverse)
zwaar
(needing or using up much energy)
zwaar
(hard to climb or traverse)
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.