deficient vs wanting

deficient

• Lacking something essential; often construed with in. 

• Insufficient or inadequate in amount. 

• Of a number n, Having the sum of divisors σ(n)<2n, or, equivalently, the sum of proper divisors (or aliquot sum) s(n). 

• A person who is deficient. 

wanting

• Absent or lacking. 

• Deficient. 

• That wants or desires. 

• Without, except, but. 

• Less, short of, minus. 

• The state of wanting something; desire.