fathomless
/ˈfað(ə)mləs
/adjective
Unable to be measured or understood; extremely deep: staring into a pair of cold, fathomless grey eyes the fathomless depths of the novel...
- It's an image of fathomless, shocking power, like lifting a trap door and glimpsing something beautiful and noisome, fascinating and unknowable.
- Unable to contemplate the truth of what we do, we extract from our fathomless collective guilt a story of primordial innocence.
- His greatest weakness may well be his seemingly fathomless personal vanity.
Synonyms
enigmatic, mysterious, impenetrable, incomprehensible, unfathomable, opaque, profound, deep
bottomless, unfathomable, unfathomed, unsounded, immeasurable, endless, infinite, measureless;
very deep, unplumbed, profound, yawning, cavernous, gaping
literary abysmal
rare chasmic