defective

 
Pronunciation: /dɪˈfɛktɪv/

adjective

  • 1imperfect or faulty: complaints over defective goods
  • lacking or deficient: dystrophin is commonly defective in muscle tissue
  • Grammar (of a word) not having all the inflections normal for the part of speech.
  • 2 dated or offensive having mental disabilities.

noun

dated or offensive
  • a person with mental disabilities.

Derivatives

defectively

adverb

defectiveness

noun