* Formal: The Pope's claim to infallibility on matters of faith is a controversial issue.
* Informal: Even the most experienced chef isn't immune to mistakes – no one has infallibility in the kitchen.
* Figurative: My grandmother's intuition was almost infallible; she could always sense when something was wrong.
* Sarcastic: He's convinced of his own infallibility, but his track record suggests otherwise.
Important Note: "Infallibility" is often used in a religious context, referring to the belief that a person or institution is incapable of error, particularly in matters of faith. However, it can also be used in a more general sense to describe a person or thing that is extremely reliable or accurate.