deficient

UK: dɪˈfɪʃ(ə)nt | US: dɪˈfɪʃ(ə)nt

Definition

  1. adj. lacking in some necessary quality or element

  2. adj. insufficient in amount or degree

  3. adj. (mathematics) less than the required or normal number

Structure
de <away, down>fic <make, do>ient <adjective suffix>
Etymology

The word "deficient" originates from Latin deficiens, the present participle of deficere ("to fail, desert, or run short"). It combines:

  • de- (indicating reversal or negation) + facere ("to make/do"), implying a "failure to complete" or "falling short."
    Over time, it evolved into Middle French déficient before entering English in the 16th century, retaining its core sense of inadequacy.
Examples

  1. The soil is deficient in nutrients, affecting crop growth.

  2. Her diet was deficient in vitamin D, leading to health issues.

  3. The report highlighted deficient safety measures at the factory.

  4. His argument was deficient in logical consistency.

  5. The team’s performance was deficient during the first half.