Faulty

Pronunciation

• IPA: /ˈfɔːlti/

Origin

fault + -y

Full definition of faulty

Adjective

1. Having or displaying faults; not perfect; not adequate or acceptable.They replaced the faulty wiring and it has worked fine ever since.I don't think you can infer that from the premise. It's a faulty argument.
2. (obsolete) At fault, to blame; guilty.
• 1590, Edmund Spenser, The Faerie Queene, II.iv:Her faultie Handmayd, which that bale did breede,
  Confest, how Philemon her wrought to chaunge her weede.

Usage notes

Nouns to which "faulty" is often applied: goods, equipment, product, wiring, construction, memory, thinking, design, hardware, software, unit, part, component, assumption, reasoning, premise, gene, operation, technique, merchandise, circuit, code, analysis, posture, machine, method, habit, process, communication.

Antonyms

• faultless

Derived terms

• faultiness