infallible
word
Definition
If someone or something is infallible, they are never wrong, never make mistakes, or always succeed.
Usage & Nuances
'Infallible' is formal and often used to describe systems, people, or methods believed perfect or incapable of error (e.g., 'an infallible rule'). Sometimes used ironically. Not for minor mistakes (use 'careless' or 'clumsy' instead).
Example Sentences
Many people thought the scientist's method was infallible.
basic
People believed the leader was infallible.
basic
There is no infallible way to predict the weather.
basic
She acts as if her advice is always infallible, but everyone makes mistakes sometimes.
natural
The coach isn't infallible; even the best make bad calls every now and then.
natural
They trusted the new technology to be infallible, but it broke down on the first day.
natural