It means an event that is not likely to happen.
The suffix for "improbable" is "-able".
Occurrence is a noun.
No, "unprobable" is not a commonly recognized word in the English language. The correct term would be "improbable" to convey something not likely to happen.
The root word of "occurrence" is "occur."
The verb forms are occur, occurs, occurring, and occurred. The noun forms are occurrence and occurrences.
Unlikely Coincidential Apocryphal A word that starts with MIRACLE
It means "Little to none". Like whats the chances of my computer will spontaniously combust as I'm typing this? Highly Improbable. Little/No chance of that happening.
A response to this question is improbable. Your recommendation of my answer is also, equally improbable. It is improbable that you will find my answer helpful. There. Three examples.
An occurrence is a loss, or a claim filed on the policy.
inprobable isn't a word. Improbable means not likely to happen
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The suffix for "improbable" is "-able".
Improbable was created in 2005.
That's an improbable story.
An unfortunate occurrence or a mishap.
Likelihood of occurrence.
Event, occurrence.