Certain in a Sentence  🔊

Definition of Certain

absolute, without question

Examples of Certain in a sentence

Science has proven that it is absolutely certain that the sun is what allows us all to stay alive here on planet Earth.  🔊

I am certain that the sky is blue, even though some people try to claim that the color is based on my own perception.  🔊

If there is one thing I am certain of, it is the fact that humans cannot breathe underwater or fly without technology.  🔊

In math, it is certain that you cannot divide a number by zero, as this process is mathematically impossible.  🔊

We are not certain what could be on the other side of a black hole, because we have never tried to send anything through one.  🔊

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