Happenstance is defined as coincidence or by chance.
(noun)If you go out to lunch and just happen to run into a friend unexpectedly while you are there, this is an example of happenstance.
See happenstance in Webster's New World College Dictionary
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noun
Origin: happen + (circum)stance
See happenstance in American Heritage Dictionary 4
noun
Origin:
Origin: happen
Origin: + (circum)stance
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