Englishfor English speakers
a posteriori risk
a
Determinative
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A is used when the following word could be any of a certain type.
Compare "A book I saw on the shelf" and "The book I gave you yesterday".
a
Noun
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A is the first letter of the alphabet.
The letter "a" comes before "b".
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In some schools, an A is a very high grade.
Ron got an A on his earth science test.
risk
Noun
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A risk is something bad that could possibly happen.
There are many risks associated with the stock market.
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A risk is the chance of something bad happening.
The risk of us failing is too great.
risk
Verb
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To risk something means to take a chance with something.
She risked hypothermia by swimming the English Channel.