defective
Definitions
Imperfect or faulty in a way that prevents proper functioning.
Having a flaw or deficiency in form, structure, or character.
Examples
The company issued a recall because the product was found to be defective.
He returned the defective watch to the store for a full refund.
The engineer discovered a defective circuit that was causing the machine to malfunction.
Synonyms
faulty flawed broken imperfect malfunctioning deficient busted