defective

adjective

Imperfect or faulty.

noun

A person with mental disabilities.

SYNONYMS

brokenbuckledcrackeddeficientdeformedfaultyflawedgone wrongimperfectin disrepairincompleteinoperativeknackeredmalfunctioningnon-functioningnot functioningnot workingon the blinkout of orderscratchedshoddytornunsoundwarpedweak