deficient

IPA: dɪfˈɪʃʌnt

Lacking something essential; often construed with in.
Insufficient or inadequate in amount.
(mathematics) Of a number n, Having the sum of divisors σ(n)<2n, or, equivalently, the sum of proper divisors (or aliquot sum) s(n)<n.

Examples of "deficient" in Sentences

Another area where I think automakers are unnecessarily deficient is A/C power.
Unsupervised children wandering around with soulless eyes and vitamin deficient skin.
Finally, with only 4-11 foot through lanes the tunnel is capacity deficient from the git-go.
Because the thought that smokers are somehow mentally weak and that their lives are deficient is wrong.
Exactly how much vitamin D children and adults should get, and defining when they are deficient, is under debate.
Madame Caumartin, has a copy in which there is not a word deficient; but she obstinately refused to lend it that the others may be made complete.
A lady at Paris, Madame Caumartin, has a copy in which there is not a word deficient; but she obstinately refused to lend it that the others may be made complete.
Produced and directed by Hank Bedford, this short followed the extremely energetic (and possibly Ritalin deficient) road warrior gearing up for another summer of peddling educational books.
Furthermore, effective demand could not remain deficient for long without the central bank's taking the falling inflation rate as a signal to cut expected short-term real interest rates and thus to move by policy means the economy back toward the natural rate of unemployment.