defective
1. [ adjective ] having a defect
Synonyms: faulty
Examples:

"I returned the appliance because it was defective"

Related terms: imperfect
2. [ adjective ] markedly subnormal in structure or function or intelligence or behavior
Examples:

"defective speech"

Related terms: abnormal
3. [ adjective ] not working properly
Synonyms: bad
Examples:

"a bad telephone connection" "a defective appliance"

Related terms: malfunctioning
Similar spelling:   defectively
  defect
  depictive
  defection
  depicted
  defector
  defecate
  depict
  defecation
  deification