wasteful vs uneconomical

wasteful and uneconomical both are adjectives.

Word	Noun	Adjective	Verb	Adverb
wasteful	No	Yes	No	No
uneconomical	No	Yes	No	No

As adjectives, wasteful and uneconomical are synonyms defined as:

wasteful and uneconomical: inefficient in use of time and effort and materials

wasteful (adjective)	uneconomical (adjective)
tending to squander and waste	inefficient in use of time and effort and materials
laying waste	wasteful of resources
inefficient in use of time and effort and materials