Find Synonyms

illogical Synonyms

Another word for illogical

Choosing another word for illogical that fits your sentence is easier when synonyms and similar words are paired with an exact adjective definition and ranked by match strength.
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• adjective (Context 1)

Lacking sense, clear, or sound reasoning; contrary to the rules of logic.

Usage Example

"It is completely irrational to assume that the project will succeed without proper funding and planning."

Strongest
irrational
unreasonable
Strong
fallacious
unsound
incoherent
invalid
absurd
senseless
specious

Opposites of illogical

The opposite of illogical shifts depending on context. Common opposites include:

logical
rational
reasonable
sensible
sound
coherent
valid
cogent
See all opposites of illogical

• Nearby Words

illiterately
illness
illogic
illogical
illogically
illuminate
illuminated

Cite this Entry

Wordmom. (2026). Synonyms for Illogical. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/illogical
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