Defective, flawed, faulty. Of a person: at fault; guilty, esp. of failure in the performance of a duty or obligation.

Having a defect or defects; lacking a required or necessary quality; deficient; imperfect; faulty.

At fault, remiss. Also: faulty, defective, flawed.

Lacking some quality or attribute necessary to perfection; less than perfect in quality or condition; substandard, flawed; defective, faulty.

Faulty.

Having defects, defective; faulty, imperfect.

Having defects; defective, faulty; imperfect. Now rare.

Having faults or defects; defective. Obsolete.

Characterized by defects; of the nature of a defect; defective.

That has become defective; having acquired a defect or defects.

Liable to fail or fall short; fallible.

Impaired or spoiled by some fault, flaw, blemish, or defect; faulty, defective, imperfect, bad; corrupt, impure, debased. In general use.

Not properly fitted. Obsolete. rare.

Esp. of a horse: having a diseased or injured hip; (hence) lame, limping; = hip-shot, adj. 1. Also (and in earliest use) figurative: clumsy…

Defective, imperfect; = defectuous, adj.

Full of flaws or defects.

gen. In extended use. Not in good health, slightly unwell; (also) not up to the mark, defective, deficient, out of order.

Full of flaws or defects.

Full of faults, faulty.

= tricky, adj. 2; liable to give way unexpectedly, defective, unreliable.

Inexplicably faulty or defective.