plural deficiencies
Definition of deficiency
1
: the quality or state of being defective or of lacking some necessary quality or element : the quality or state of being deficient : inadequacy
suffers from a deficiency of critical thinking
2
: an amount that is lacking or inadequate : shortage
staffing deficiencies
: such as
a
: a shortage of substances necessary to health
a vitamin C deficiency hormone deficiencies
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Merriam-Webster unabridged
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Time Traveler for deficiency
The first known use of deficiency was in 1603
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