deficient vs wanting

deficient and wanting both are adjectives.

Word	Noun	Adjective	Verb	Adverb
deficient	No	Yes	No	No
wanting	No	Yes	No	No

As adjectives, deficient and wanting are synonyms defined as:

Other synonyms of deficient include lacking.

deficient (adjective)	wanting (adjective)
of a quantity not able to fulfill a need or requirement	inadequate in amount or degree
inadequate in amount or degree	nonexistent
falling short of some prescribed norm