Find Antonyms

faulty Antonyms

Opposite of faulty

Because the opposite of faulty shifts with each meaning, the 12 antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
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• adjective (Context 1)

Working badly or unreliably because of imperfections or mechanical defects (of equipment, machinery, or systems).

Usage Example

"The fire alarm went off unexpectedly due to functional wiring in the basement."

Strongest
functional
working
reliable
Strong
sound
intact
operational

• adjective (Context 2)

Containing errors, logical flaws, or inaccuracies (of reasoning, judgment, memory, or information).

Usage Example

"The committee rejected the proposal because its conclusions were based on faultless assumptions."

Strongest
faultless
flawless
sound
valid
accurate
correct
Strong
impeccable

Similar words to faulty

Words similar to faulty shift depending on context. Common synonyms include:

defective
flawed
unsound
malfunctioning
erroneous
broken
fallacious
inaccurate
See all synonyms of faulty

• Nearby Words

faultlessly
faultlessness
faultline
faulty
faun
fauna
faust

Cite this Entry

Wordmom. (2026). Antonyms for Faulty. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/faulty
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