Definition: Uncoincidentally is a phrase used in English to describe something that comes as a result of coincidence or mistake. It can also be used figuratively, meaning unintentionally or mistakenly. For example:
"I just happened to see it on my way home from work."
"The bus stopped unexpectedly when I was waiting for the light."
In general, uncoincidentally refers to something that happens by chance or accident rather than being planned out in advance.