non sequitur

noun

non se·​qui·​tur ˌnän-ˈse-kwə-tər 

 also  -ˌtu̇r

1

: an inference (see inference sense 1) that does not follow from the premises (see premise entry 1 sense 1)

specifically : a fallacy resulting from a simple conversion of a universal affirmative (see affirmative entry 1 sense 3) proposition or from the transposition of a condition and its consequent (see consequent entry 1 sense 1)

2

: a statement (such as a response) that does not follow logically from or is not clearly related to anything previously said

We were talking about the new restaurant when she threw in some non sequitur about her dog.

Did you know?

Non sequitur comes directly from Latin, in which language it means “it does not follow.” Although the Latin non sequitur can constitute a phrase or even a complete sentence, in English non sequitur is a noun, and thus it follows that the plural of non sequitur is non sequiturs. Borrowed into English in the 16th century by logicians, non sequitur initially referred to a conclusion that did not follow the statements preceding it. The meaning has now broadened to include statements that are seemingly unrelated to the topic at hand, or that seem to come out of the blue. So if you ever forget the definition of non sequitur, just remember: a penny saved is a penny earned.

Examples of non sequitur in a Sentence

We were talking about the new restaurant when she threw in some non sequitur about her dog.

Recent Examples on the Web

His late-night posts on X, mass emails to federal employees, and non sequiturs uttered on television have prompted even more questions about his drug use. —Shayla Love, The Atlantic, 5 Mar. 2025

This is a love affair blossoming on the planet of non sequiturs, the kind of repartee moviegoers used to get with William Powell and Carole Lombard, or Cary Grant and Irene Dunne. —Stephanie Zacharek, TIME, 17 Jan. 2025

The non sequitur sends Grace into arpeggios of laughter, but once Dylan is out of earshot, Grace discloses to me that she’s begun to regard Dylan as one of her own children. —Barrett Swanson, Harper's Magazine, 2 Jan. 2025

Economists were trafficking in non sequitur while at the same time glossing over the fact that work divided looms largest on prices. —John Tamny, Forbes, 15 Dec. 2024

Word History

Etymology

Latin, it does not follow

First Known Use

1540, in the meaning defined at sense 1

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