unfathomable

[ uhn-fath-uh-muh-buh l ]
/ ʌnˈfæð ə mə bəl /

adjective

not able to be fathomed, or completely understood; incomprehensible: heroism in the face of unfathomable conflict.
not able to be measured with a sounding line, or fathomed: unfathomable depths of the ocean.

OTHER WORDS FROM unfathomable

un·fath·om·a·ble·ness, noun

Example sentences from the Web for unfathomable

British Dictionary definitions for unfathomable

unfathomable
/ (ʌnˈfæðəməbəl) /

adjective

incapable of being fathomed; immeasurable
incomprehensible

Derived forms of unfathomable

unfathomableness, noun unfathomably, adverb