faulty

 
Pronunciation: /ˈfɔːlti, ˈfɒlti/

adjective (faultier, faultiest)

  • not working or made correctly; having defects: a faulty brake
  • (of reasoning and other mental processes) mistaken or misleading because of flaws: faulty logic
  • having or displaying weaknesses: her character was faulty

Derivatives

faultily

adverb

faultiness

noun