General synonyms:
* Avoided
* Escaped
* Evaded
* Dodged
* Missed
* Slipped away from
* Got away from
* Outwitted
* Circumvented
* Defied
* Frustrated
* Baffled
More specific synonyms:
* Outfoxed: (implies cleverness or trickery)
* Slipped through the net: (implies escaping capture)
* Went under the radar: (implies avoiding detection)
* Flew under the radar: (similar to above, but suggests it happened unnoticed)
* Leapt ahead of: (implies being faster or more agile)
* Unraveled: (implies a solution or answer was not found)
The best synonym to use will depend on the specific situation and the nuance you want to convey.