Main entry: nonfunctional
Definition: not having or performing a function
Antonyms: functional
Definition: designed for or capable of a particular function or use
Main entry: nonfunctional, malfunctioning
Definition: not performing or able to perform its regular function
Usage: a malfunctioning valve
Antonyms: functioning
Definition: performing or able to perform its regular function
Antonyms: right, rightfulness
Definition: anything in accord with principles of justice
Antonyms: compensate, redress, right, correct
Definition: make reparations or amends for
Definition: free from error; especially conforming to fact or truth
Definition: correct in opinion or judgment
Antonyms: right
Definition: in conformance with justice or law or morality
Definition: that which is pleasing or valuable or useful
Antonyms: good
Definition: having desirable or positive qualities especially those suitable for a thing specified