What are synonyms of mistake?

Here are some synonyms for "mistake," depending on the context and nuance you're looking for:

General:

* Error

* Blunder

* Mishap

* Fault

* Slip-up

* Oversight

* Miscalculation

* Misjudgment

* Misunderstanding

* Flaw

* Defect

More formal:

* Inaccuracy

* Misapprehension

* Aberration

* Deviation

* Discrepancy

* Misconception

* Fallacy

Informal:

* Boo-boo

* Goof-up

* Screw-up

* Flub

* Faux pas

For specific types of mistakes:

* Logical mistake: fallacy, misconception

* Technical mistake: error, glitch, bug

* Moral mistake: transgression, sin, offense

* Social mistake: faux pas, blunder

The best synonym will depend on the specific situation and the desired level of formality.