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100 Best Synonyms for “Defective”

October 31, 2026

100 Best Synonyms for

No. Item Definition
1. aberrant Deviating from the normal type.
2. abnormal Not normal.
3. adulterated Made impure by added substances.
4. anomalous Departing from what is normal.
5. askew Not straight or aligned.
6. bad Unsatisfactory or not working.
7. battered Damaged by repeated blows or use.
8. beat-up Damaged through rough use.
9. below-spec Below required specifications.
10. bent No longer straight or proper.
11. blemished Marked by a flaw.
12. broken No longer functioning properly.
13. buggy Containing software errors.
14. cheap Poorly made or low quality.
15. chipped Having small pieces broken off.
16. clapped-out Old and no longer reliable.
17. contaminated Made impure or unsafe.
18. corrupted Damaged in stored form.
19. cracked Having cracks.
20. crummy Very poor in quality.
21. damaged Harmed or impaired in condition.
22. decayed Damaged by rot or age.
23. decrepit Worn out and weakened.
24. deficient Lacking needed quality or function.
25. deformed Abnormally formed.
26. dilapidated Run-down and in poor repair.
27. distorted Altered from proper form.
28. dysfunctional Not working normally.
29. erratic Inconsistent or unpredictable.
30. erroneous Containing an error.
31. fault-ridden Full of faults.
32. faulty Not working correctly.
33. flaw-ridden Full of flaws.
34. flawed Having faults or imperfections.
35. fragile Easily broken or damaged.
36. frayed Worn at the edges.
37. garbled Distorted and unclear.
38. glitchy Prone to technical faults.
39. haywire Behaving or working erratically.
40. impaired Weakened or reduced in function.
41. imperfect Not complete or faultless.
42. impure Mixed with unwanted substances.
43. inadequate Not good enough.
44. inferior Lower in quality.
45. inoperable Not able to operate.
46. insufficient Not adequate for requirements.
47. irregular Not regular or normal.
48. junky Cheap and poor-quality.
49. leaky Letting fluid or air escape.
50. loose Not firmly fixed.
51. lopsided Unevenly balanced or shaped.
52. lousy Very poor or faulty.
53. low-grade Of poor quality.
54. malformed Badly formed.
55. malfunctioning Not operating as intended.
56. marred Spoiled by damage or flaws.
57. misaligned Not correctly aligned.
58. misshapen Badly or wrongly shaped.
59. nonconforming Not meeting requirements.
60. nonfunctional Not functioning.
61. nonstandard Not meeting the usual standard.
62. off-spec Not meeting specifications.
63. on the blink Working unreliably.
64. out of order Not functioning properly.
65. out-of-spec Outside required specifications.
66. poor-quality Made or performing badly.
67. poorly designed Designed badly.
68. punctured Pierced by a hole.
69. ramshackle Badly built or maintained.
70. rickety Weak and likely to collapse.
71. rotten Decayed or unsound.
72. run-down In poor condition.
73. ruptured Burst or torn open.
74. scarred Marked by lasting damage.
75. scrambled Disordered or corrupted.
76. second-rate Of inferior quality.
77. shaky Unstable or unreliable.
78. shoddy Poorly made.
79. spoiled No longer good or usable.
80. spoilt No longer good or usable.
81. substandard Below an acceptable standard.
82. tainted Contaminated or spoiled.
83. tattered Torn and worn.
84. third-rate Very poor in quality.
85. threadbare Worn thin from use.
86. torn Damaged by ripping.
87. twisted Bent out of normal shape.
88. unfit Not suitable or safe.
89. unreliable Not dependable.
90. unserviceable Not fit for use.
91. unsound Not solid, safe, or reliable.
92. unstable Not steady or reliable.
93. unsteady Not stable or secure.
94. unusable Unable to be used.
95. wanting Lacking required quality.
96. warped Bent or twisted out of shape.
97. weak Lacking strength or effectiveness.
98. wobbly Unsteady or shaky.
99. worn Damaged by use.
100. wrong Not right or correct.

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