Synonyms:
* Error: This is a general term for a deviation from accuracy or correctness.
* Blunder: A serious mistake, often characterized by clumsiness or foolishness.
* Fault: A shortcoming or imperfection, often implying responsibility.
* Slip-up: A minor error, often unintentional.
* Mishap: An unfortunate incident, often accidental.
* Miscalculation: A wrong calculation or estimation.
* Misjudgment: A wrong decision or opinion.
* Flaw: A defect or imperfection in something.
* Oversight: Something that is accidentally overlooked.
Antonyms:
* Accuracy: The quality of being correct or precise.
* Correctness: The state of being free from errors.
* Perfection: The state of being flawless or complete.
* Success: The achievement of a desired outcome.
* Excellence: The quality of being outstanding or exceptional.
* Truth: Something that is accurate and real.
The best synonym or antonym to use will depend on the specific context of your sentence.