1.
illogical; lacking logical coherence
Describes reasoning, arguments, statements, or actions that do not follow logical principles. Typically used negatively to criticize reasoning that is inconsistent, unreasoned, or based on emotion rather than analysis. The direct antonym is 論理的 ('logical').
非論理的な主張。
An illogical argument.
Formed with the negating prefix 非 ('non-; un-') attached to 論理的 ('logical'). The prefix 非〜 is productive: 非公式 ('unofficial'), 非常識 ('unreasonable; outrageous'), 非科学的 ('unscientific').
Usage
- Used as a な-adjective: 非論理的な結論 ('an illogical conclusion').
- Adverbially: 非論理的に考える ('to think illogically').
- Usually evaluative and negative — used when criticizing someone's reasoning.
- 非合理的 ('irrational') overlaps in meaning; see distinctions below.
Common collocations
- 非論理的な主張: illogical claim
- 非論理的な判断: illogical judgment
- 非論理的な結論: illogical conclusion
- 非論理的に感じる: to feel illogical
- 非論理的な思考: illogical thinking
Similar words
- 論理的: logical — the direct antonym.
- 非合理的: irrational — stresses being contrary to reason; often covers economic or emotional irrationality rather than a broken argument.
- 矛盾した: contradictory — points to specific contradictions, not overall illogic.
- 無茶な: unreasonable; reckless — more colloquial, stresses going beyond what is sensible.
Related Words
Compare:
非合理的 (irrational)
Compare:
矛盾 (contradictory)
Compare:
無茶 (unreasonable)
Related:
論理 (logic)