Unthrifty is a related term of improvident.
As adjectives the difference between unthrifty and improvident
is that unthrifty is not thrifty while improvident is failing to provide for the future; reckless.
unthrifty
English
Adjective
(er)
Not thrifty.
improvident
English
Adjective
(
en adjective)
failing to provide for the future; reckless
incautious; prone to rashness
Synonyms
* (not provident) myopic, short, wasteful, imprudent, thriftless
* See also
Antonyms
* provident
* See also
Derived terms
* improvidence
* improvidently