| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | wrong; defective |
| Synonyms: | awry, bad, confused, crooked, erring, erroneous, fallacious, false, faulty, flawed, foul, glitched up, haywire, imperfect, improper, inaccurate, inappropriate, incorrect, mistaken, out of order, sick, unfair, unlawful, unsuitable, untoward |
| Antonyms: | good, right |
| Main Entry: | defective |
| Part of Speech: | adjective |
| Definition: | broken, not working |
| Synonyms: | abnormal, amiss, blemished, damaged, deficient, faulty, flawed, impaired, imperfect, inadequate, incomplete, injured, insufficient, lacking, on the bum, out of order, poor, seconds, sick, subnormal, unfinished, unhealthy, unsound, wanting |
| Notes: | defective means having a defect or fault, while deficient means inadequate or lacking in amount or degree |
| Antonyms: | excellent, faultless, flawless, perfect, unbroken |
| Main Entry: | deficient |
| Part of Speech: | adjective |
| Definition: | imperfect, inadequate |
| Synonyms: | amiss, bad, damaged, defective, exiguous, faulty, flawed, found wanting, impaired, incomplete, inferior, infrequent, injured, insufficient, lacking, marred, meager, not cut out for, not enough, not make it, not up to scratch, outta gas, rare, scant, scanty*, scarce, second fiddle, second string, short, shy, sketchy, skimpy, third string, unassembled, unequal, unfinished, unsatisfactory, wanting, weak |
| Notes: | defective means having a defect or fault, while deficient means inadequate or lacking in amount or degree |
| Antonyms: | adequate, ample, enough, excessive, faultless, flawless, perfect, satisfactory, sufficient, superfluous |
| Main Entry: | dysfunctional |
| Part of Speech: | adjective |
| Definition: | socially impaired |
| Synonyms: | broken, debilitated, decayed, defective, deteriorated, flawed, inhibited, maladjusted, malfunctional, sick, undermined, unfit, wounded |
| Main Entry: | erroneous |
| Part of Speech: | adjective |
| Definition: | wrong, incorrect |
| Synonyms: | all off, all wet, amiss, askew, awry, defective, fallacious, false, faulty, flawed, inaccurate, inexact, invalid, misguided, mistaken, off, specious, spurious, unfounded, unsound, untrue, way off, wrong number |
| Antonyms: | correct, right, true, valid |
| Main Entry: | faulty |
| Part of Speech: | adjective |
| Definition: | not working; incorrect |
| Synonyms: | adulterated, amiss, awry, bad, below par, blamable, blemished, botched, broken, cracked, damaged, debased, defective, deficient, distorted, erroneous, fallacious, fallible, false, flawed, frail, impaired, imperfect, imprecise, inaccurate, inadequate, incomplete, inexact, injured, insufficient, invalid, lame, leaky, lemon, maimed, malformed, malfunctioning, marred, out of order, rank, sick, tainted, unfit, unreliable, unretentive, unsound, warped, weak, wrong |
| Antonyms: | accurate, correct, perfect, sound, strong, working |
| Main Entry: | impaired |
| Part of Speech: | adjective |
| Definition: | injured, faulty |
| Synonyms: | broken, busted, damaged, debilitated, defective, down*, flawed, harmed, hurt, imperfect, kaput, marred, on the blink, on the fritz, spoiled, unsound |
| Antonyms: | healthy, perfect, strong |
| Main Entry: | incorrect |
| Part of Speech: | adjective |
| Definition: | wrong |
| Synonyms: | counterfactual, erroneous, false, faulty, flawed, imprecise, improper, inaccurate, inappropriate, inexact, mistaken, not trustworthy, out*, specious, unfitting, unreliable, unseemly, unsound, unsuitable, untrue, way off, wide of the mark, wrong number |
| Antonyms: | correct, right, true |
| Main Entry: | lacking |
| Part of Speech: | adjective |
| Definition: | wanting, deficient |
| Synonyms: | can't cut it, coming up short, defective, deprived of, flawed, impaired, inadequate, incomplete, minus, missing, needed, needing, not hacking it, not making it, sans, short, without |
| Antonyms: | abundant, enough, having, profuse, sufficient |