- unfathomed
- Synonyms and related words:able, abysmal, abyssal, bottomless, cavernous, colossal, deep as hell, enigmatic, enormous, fathomless, gaping, immense, incalculable, incognizable, massive, mighty, monstrous, mysterious, plumbless, plunging, prodigious, puzzling, sealed, soundless, strange, tremendous, unapparent, unapprehended, unascertained, unbeknown, uncharted, unclassified, undisclosed, undiscoverable, undiscovered, undivulged, unexplained, unexplored, unexposed, unfamiliar, unfathomable, unheard, unheard-of, unidentified, uninvestigated, unknowable, unknown, unperceived, unplumbed, unrevealed, unsounded, unsuspected, untouched, vast, virgin, without bottom, yawning
Moby Thesaurus. Grady Ward. 1996.