arduous
- Needing or using up much energy; testing powers of endurance.
- (obsolete) burning; ardent
- Difficult or exhausting to traverse.
Frequency
Pronounced as (IPA)
/ˈɑː.djuː.əs/
Etymology
From Latin arduus (“lofty, high, steep, hard to reach, difficult, laborious”), akin to Irish ard (“high”).
difficult of access
troublous
labourious
laboursome
hard-to-reach
difficult to climb
laberious
hard-to-get-to
requiring much labour
burdenous
ardu
zwaar
arduo
arduo
mühsam
ardu
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