As nouns the difference between arduousness and awkwardness
is that arduousness is the state of being arduous while awkwardness is the state or quality of being awkward; clumsiness; unskillfulness.
arduousness
English
Noun
(-)
The state of being arduous.
awkwardness
English
Alternative forms
* aukwardness (obsolete)
Noun
(es)
The state or quality of being awkward; clumsiness; unskillfulness.
The quality of an embarrassing situation.
Synonyms
* clunkiness
* clumsiness
* ineptness, ineptitude
* inelegance
Related terms
* awkwardly