Synonyms:
- Greek to one,
- ambiguous,
- arcane,
- beyond understanding,
- cabalistic,
- impenetrable,
- inarticulate,
- incognizable,
- incoherent,
- incomprehensible,
- mystic,
- numinous,
- past comprehension,
- rambling,
- unaccountable,
- unconnected,
- unfathomable,
- unguessed,
- unintelligible,
- unknowable,
- unsearchable