certitude

American  

[sur-ti-tood, -tyood] / ˈsɜr tɪˌtud, -ˌtyud /

noun

1. freedom from doubt, especially in matters of faith or opinion; certainty.

   Synonyms:

   belief, conviction, assurance

---

certitude British  

/ ˈsɜːtɪˌtjuːd /

noun

1. confidence; certainty

---

Other Word Forms

• noncertitude noun
• uncertitude noun

Etymology

Origin of certitude

1375–1425; late Middle English < Late Latin certitūdō, equivalent to Latin certi- (combining form of certus sure; see certain) + -tūdō -tude

Explanation

If you're absolutely convinced your team is going to the Super Bowl, you state it with certitude or confidence. Your team didn't make it? Oh dear, you were guilty of certitude — an absolute conviction that the outcome of the game did not support. In other words, you were a tad cocky. Certitude is very similar to certainty, and often used interchangeably, but there's a hint of danger about certitude; someone who displays it may well be overconfident. Certainty is more certain.

Example Sentences

But we live in an era when instantaneous certitude about everything, an iron conviction in subjective judgment in the face of objective uncertainty, is the only guarantee of a hearing.

From The Wall Street Journal • Mar. 30, 2026

America, you’re a big, boisterous nation of more than 342 million people, with all sorts of competing impulses and interests, and no end of certitude to go around.

From Los Angeles Times • Jul. 4, 2025

We can never actually achieve total certitude about the shapes climate change will take, nor do we need to arrive at certitude to take action.

From Salon • May 1, 2025

The lack of any enforcement mechanism means that there is no authoritative body to provide a definitive judgment, and no one has any legitimate claim to certitude.

From Slate • Dec. 5, 2024

I took up the two packages and gave the bread to the little girl, the woman all iron-gray behind the counter, watching us with cold certitude.

From "The Sound and the Fury" by William Faulkner