deficient

/dɪˈfɪʃənt/
adjective
  1. Not having enough of something that is needed or expected; lacking in quantity or quality.
    • Her diet was deficient in vitamin C, so she started eating more oranges.
    • The soil in this area is deficient in essential minerals for growing crops.
    • The report was criticized for being deficient in supporting evidence.
  2. Not good enough; below an acceptable standard.
    • His performance at work was deficient, leading to a formal warning from his manager.
    • The student's math skills were deficient, so she enrolled in a tutoring program.
    • The building's fire safety measures were found to be deficient during the inspection.
noun
  1. A person who is lacking in some ability, quality, or resource (often used in formal or technical contexts).
    • The charity focuses on helping mental deficients gain life skills.
    • In the study, the deficients in the control group showed slower progress.
    • The program provides extra support for learning deficients in reading comprehension.
What does "deficient" mean? | whatsthatwordmean | whatsthatwordmean