Word Study
arduousness
WORDNET DICTIONARY
Noun arduousness has 1 sense
- arduousness(n = noun.attribute) strenuousness - extreme effortfulness; Array is a kind of effortfulness
Derived forms adjective arduous3, adjective arduous1, adjective arduous2
CIDE DICTIONARY
arduousness, n.
The quality of being arduous; difficulty of execution. [1913 Webster]
For further exploring for "arduousness" in Webster Dictionary Online