Englishfor English speakers
certainty
Noun
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Certainty is the state of being 100% sure.
It's a little too early to say that with absolute certainty.
The doctor could not say what was wrong with any degree of certainty.
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If something is a certainty, it is sure to happen.
The expected change became a certainty two weeks ago.
We need to accept the certainties of aging, illness, and death.
equivalence
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noun
(= par)
a state of being essentially equal or equivalent; equally balanced
on a par with the best
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noun
essential equality and interchangeability
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noun
(= comparison, compare)
qualities that are comparable
no comparison between the two books
beyond compare