Having a fault or faults; defective, blemished, imperfect, or erroneous.
Webster's New World
Deserving of blame; guilty.
The definition of faulty is something unreliable or that doesn't work, or an incorrect thought pattern.
A toaster that doesn't toast bread is an example of a faulty toaster.
When you add 2+2 and get 5, this is an example of faulty reasoning.
When someone is a weak and not very nice person, this is an example of faulty character.
Other Word Forms of Faulty
Origin of Faulty
fault + -y
Faulty Is Also Mentioned In
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