A tenet or proposition contrary to received opinion; an assertion or sentiment seemingly contradictory, or opposed to common sense; that which in appearance or terms is absurd, but yet may be true in fact.
- A seemingly contradictory statement that may nonetheless be true: the paradox that standing is more tiring than walking.
- One exhibiting inexplicable or contradictory aspects: "The silence of midnight, to speak truly, though apparently a paradox, rung in my ears” ( Mary Shelley).
- An assertion that is essentially self-contradictory, though based on a valid deduction from acceptable premises.
- A statement contrary to received opinion.