unfathom

== English == === Etymology === From un- +‎ fathom, possibly created by analogy with untangle, unravel, etc. === Verb === unfathom (third-person singular simple present unfathoms, present participle unfathoming, simple past and past participle unfathomed) (transitive) to come to comprehend; demystify. ==== Usage notes ==== Though attested for over 100 years, the word unfathom is absent from most dictionaries. It is considered by some to be an erroneous formation stemming from a lack of understanding that fathom itself already has the correct meaning, or a confusion with other un- words with similar meaning such as unravel, or erroneous transference of the prefix from unfathomable or unfathomed. ==== Synonyms ==== fathom unravel