It's possible that it's a combination of two Spanish words:
* "Sobresaliente" which means "outstanding" or "excellent".
* "Resiliente" which means "resilient".
Therefore, "sobrasiliente" could be a made-up word to express something that is extremely resilient or incredibly outstanding.
However, without further context, it's impossible to know for sure what "sobrasiliente" means.
Could you please provide more context?
For example:
* Where did you encounter this word?
* What was the context of its use?
* Was it written or spoken?
With more information, I can provide a more accurate explanation.