Synonym: incomplete, lacking, missing, wanting. Antonym: ample, enough, plenty, sufficient. Similar words: deficiency, efficient, sufficient, proficient, coefficient, efficiently, inefficient, sufficiently. Meaning: [-nt] 
adj. 1. inadequate in amount or degree 2. of a quantity not able to fulfill a need or requirement 3. falling short of some prescribed norm.
adj. 1. inadequate in amount or degree 2. of a quantity not able to fulfill a need or requirement 3. falling short of some prescribed norm. 
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(1) Women who are dieting can become iron deficient.
(2) Our prisons are our most deficient social service.
(3) Deaf people are sometimes treated as being mentally deficient.
(4) His theory is deficient in several respects.
(5) Their food is deficient in iron.
(6) The milk is deficient in fat.
(7) Our knowledge of the matter is deficient.
(8) A diet deficient in vitamin D may cause the disease rickets.
(9) Your diet is deficient in vitamins.
(10) How would they react to a deficient health care system?
(11) And the ending is slightly unsatisfactory(Sentencedict.com), arguably deficient in the final twist or flourish.
(12) Tax deficient California's treatment of multinational firms threatens to provoke a global tax war.
(13) Gospel preaching will be seriously deficient if this dimension is omitted.
(14) They were seriously deficient for people who moved jobs and, often, inadequate for widows.
(15) Large units do not seem to be deficient in democratic qualities and may even be more democratic in some respects; 4.
(16) Several hormones, particularly insulin, the hormone that is deficient in sugar diabetes, control these processes.
(17) An educational system which fails to teach basic arithmetic is seriously deficient.
(18) There was an even more profound sense in which the prevailing version of good practice was deficient.
(19) Carnitine absorption from the gut is indirectly suggested by a carnitine deficiency state during carnitine deficient diets.
(20) As many as 2 million students leave school with deficient basic skills.
(21) The school I was sent to was overrun with colonial children-many described as mentally deficient and put in special schools.
(22) They specifically admitted children who were behaviorally aggressive, not mentally deficient, brain damaged, or psychotic.
(23) If you have a slurred voice, people are likely to treat you as mentally deficient.
(24) A study in rats showed reduced survival of glucose-6-phosphate dehydrogenase deficient erythrocytes in the presence of ascorbic acid.
(25) Traditionally, physicians have reserved testosterone replacement for men who are severely hormone deficient.
(26) They may catch other infections such as measles or chicken-pox, with serious consequences due to their deficient immune system.
(27) The investment appraisal published by the Southern board was deficient in many respects.
(28) I have seen many children who are described as severely deficient in attention capacities and as having Attention Deficit Disorder.
(29) The capacity of the ram inboard to accommodate her crew was fearfully deficient....
(30) To avoid the window tax many were either devoid or severely deficient in natural light.
More similar words: deficiency, efficient, sufficient, proficient, coefficient, efficiently, inefficient, sufficiently, insufficient, self-sufficient, deficit, efficiency, science fiction, sufficiency, proficiency, trade deficit, budget deficit, inefficiency, deficit spending, deficit financing, scientific, unscientific, scientific method, beneficial, beneficiary, ancient, prescient, scientist, omniscient, presciently.