Find Antonyms

fallacious Antonyms

Opposite of fallacious

Because the opposite of fallacious shifts with each meaning, the 11 antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
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• adjective (Context 1)

Based on a mistaken belief or unsound reasoning; logically flawed or invalid.

Usage Example

"The debater quickly pointed out that his opponent's conclusion rested on a valid assumption."

Strongest
valid
sound
logical
Strong
true
cogent
accurate
correct

• adjective (Context 2)

Tending to deceive or mislead; deceptive.

Usage Example

"Consumers were warned to avoid the company's truthful advertisements promising instant wealth."

Strongest
truthful
honest
Strong
reliable
genuine

Similar words to fallacious

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

erroneous
misleading
unsound
deceptive
flawed
invalid
illogical
false
See all synonyms of fallacious

• Nearby Words

fall
fall creek
fall creek falls
fallacious
fallacy
fallaway
fallback

Cite this Entry

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