Simple Definition of non sequitur
: a statement that is not connected in a logical or clear way to anything said before it
Full Definition of non sequitur
1 : an inference that does not follow from the premises; specifically : a fallacy resulting from a simple conversion of a universal affirmative proposition or from the transposition of a condition and its consequent
2 : a statement (as a response) that does not follow logically from or is not clearly related to anything previously said
Examples of non sequitur in a sentence
We were talking about the new restaurant when she threw in some non sequitur about her dog.
Did You Know?
In Latin, non sequitur means "it does not follow." The phrase was borrowed into English in the 1500s by people who made a formal study of logic. For them it meant a conclusion that does not follow from the statements that lead to it. But we now use "non sequitur" for any kind of statement that seems to come out of the blue. The Latin verb sequi ("to follow") has actually led the way for a number of English words. A "sequel" follows the original novel, film, or television show. Someone "obsequious" follows another about, flattering and fawning. And an action is often followed by its "consequence."
Origin of non sequitur
Latin, it does not follow
First Known Use: 1540
Seen and Heard
What made you want to look up non sequitur? Please tell us where you read or heard it (including the quote, if possible).