As nouns the difference between frugalness and shrewdness
is that frugalness is the property of being frugal while shrewdness is the quality of being shrewd.
frugalness
English
Noun
(-)
The property of being frugal.
Usage notes
The term frugality is much more commonly used.
Synonyms
*frugality
*parsimony
*thriftyness
*cheapness
shrewdness
English
Noun
(shrewdnesses)
The quality of being shrewd.
An invented collective name for a group of apes.