Synonyms & related words for unfathomable

Find synonyms, related words, and the definition of unfathomable — including abysmal, fathomless, incomprehensible, unfathomed, inscrutable, abyssal. Dendril is a free visual thesaurus that shows them on an interactive map where stronger matches sit closer to the center — no signup, no ads.

Words related to unfathomable

Explore words related to unfathomable — words associated with it, words that go with it, and its nearest matches in meaning. Related words include unfathomably, inconceivable, unimaginable, plumbable, incogitable, inconceivability, fathomed, unconceivable. Click any word to make it the center of the map and keep exploring the web of connections.

Synonyms for unfathomable

Common synonyms for unfathomable include abysmal, fathomless, incomprehensible, unfathomed, inscrutable, abyssal, unknowable, immeasurable — words that share a close meaning. Hover or tap any word on the map for its definition and part of speech.

Where does unfathomable come from?

The word unfathomable breaks down into 3 roots of Old English and Latin origin: un-, from Old English un- (“not”); fathom, from Old English faethm (“outstretched arms, embrace”); and -able, from Latin -abilis (“capable of being”). Explore each root to see other English words built from the same source.