Unexplainable synonyms

There sure are some unexplainable facets to our relationship, however.

You find unexplainable receipts, clothing purchases, or charges on a phone bill that don't make sense.

Health practitioners treating unexplainable symptoms may be inclined to recommend this testing or mold elimination procedures.

Or perhaps you have an unexplainable affection for this decade and all of its quirky fashions.

The fact that this case remains so controversial means that this example of a ghost caught on video should remain in the "unexplainable" category of paranormal evidence.