- unknowable
- Synonyms and related words:Greek to one, able, ambiguous, arcane, beyond understanding, cabalistic, enigmatic, impenetrable, inarticulate, incalculable, incognizable, incoherent, incomprehensible, inscrutable, mysterious, mystic, numinous, past comprehension, puzzling, rambling, sealed, strange, unapparent, unapprehended, unascertained, unbeknown, uncharted, unclassified, unconnected, undisclosed, undiscoverable, undiscovered, undivulged, unexplained, unexplored, unexposed, unfamiliar, unfathomable, unfathomed, ungraspable, unguessed, unheard, unheard-of, unidentified, unimaginable, unintelligible, uninvestigated, unknown, unperceived, unplumbed, unrevealed, unsearchable, unsuspected, untouched, virgin
Moby Thesaurus. Grady Ward. 1996.