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.
of
Preposition
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Made using.
It is a house of cards.
event
Noun
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An event is anything that happens.
The event of her walking into the room happened before the event of the book falling off the table, so she saw it fall.
In the event that the machine breaks, read this to know what to do.
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An event is when many people come together at a time they choose for a reason or for fun.
At the event tomorrow we're going to have balloons and music.