What context can I use each word in?
Learn when and how to use these words with these examples!
unfallible
Example
The weather forecast is unfallible, so we should always check multiple sources. [unfallible: adjective]
Example
He is an unfallible source of misinformation, so don't believe everything he says. [unfallible: adjective]
infallible
Example
The infallible logic of mathematics ensures that 2+2 always equals 4. [infallible: adjective]
Example
She has an infallible memory and never forgets anything. [infallible: adjective]
Good things to know
Which word is more common?
Infallible is more commonly used than unfallible in everyday language. Infallible is versatile and covers a wide range of contexts, while unfallible is less common and may be considered archaic or outdated in some contexts.
What’s the difference in the tone of formality between unfallible and infallible?
Both unfallible and infallible are formal words that are typically used in academic or technical writing to describe the reliability or accuracy of data, systems, or processes.
