'Idefective' is a term that denotes something that is flawed, problematic, or not meeting the required standards. There exist multiple synonyms for this word. Among them, 'imperfect' refers to the state of being incomplete or flawed, while 'faulty' signifies something that has a malfunction of some kind. 'Defective' is a commonly used synonym that is equivalent to 'idefective.' Another word that can be used instead of 'idefective' is 'blemished,' implying something that has a mark or defect that detracts from its appearance. 'Impaired' refers to something being damaged or weakened in some manner and is another appropriate synonym for 'idefective.' Other synonyms for 'idefective' are 'damaged, faulty, flawed, incomplete, substandard, and unfit'.