certainty

[ˈsɜːtn̩ti]
[ˈsɝtn̩ti]
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Certainty is a feeling or state of being sure about something.

When we talk about certainty, we usually mean that we have confidence in our opinions, decisions, or facts. For example, if someone asks us what time our flight leaves and we know for sure that it's 8 o'clock, then we can say with certainty that the answer is 8 o'clock. We use words like "definitely", "without a doubt", or "for sure" to show that we're talking about something certain.

How common is "certainty"?

Word certainty is considered uncommon in modern English.
It has a balanced usage among all categories: speech, fiction, newspapers and academic texts.
Definitions

noun

  • The state of being certain.

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certitudesurenesssure thingdoubtuncertainty