defective

Indicates an extreme and critical level of defect.

Emphasizes a very significant level of defect.

Indicates a grave or severe defect, common in British English.

Indicates a minor or not very serious defect.

Indicates that only a part of the item is faulty.

Describes a condition related to mental capacity. Note: This term can be considered outdated and offensive.

Indicates a state of being faulty.

Indicates that something is discovered to be faulty over time or after testing.