Pronunciation: [ʌnfˈaðəmd] (IPA) 
The word "unfathomed" is spelled with the prefix "un-" which means "not" attached to the word "fathomed" which means "understood or explored to its fullest extent." The phonetic transcription of this word in IPA is /ʌnˈfæðəmd/. The stress is on the second syllable and the "th" sound is pronounced as a voiced dental fricative /ð/. The "ed" at the end of "fathomed" is dropped and replaced with "en" to create the past participle form.
"Unfathomed" is an adjective that refers to something that is not fully understood, explored, or comprehended. It describes a subject, concept, or idea that remains mysterious, deep, or beyond the limits of human comprehension.
When an object, problem, or situation is considered "unfathomed," it implies that its depths and complexities have not been fully explored or grasped. It represents a lack of comprehensive knowledge or understanding. The term can often be associated with awe or a sense of wonder, as it suggests a vast expanse of knowledge yet to be unraveled.
The concept of "unfathomed" can also be applied metaphorically to emotions, experiences or aspects of human nature that are deeply complex and not easy to comprehend. For example, the unfathomed depths of a person's emotions may refer to the vast or even hidden array of feelings they possess. Similarly, the unfathomed mysteries of the universe allude to the vastness and immeasurable complexities of the cosmos.
The term "unfathomed" conveys a sense of mystery, inviting individuals to explore, question, and attempt to understand that which remains beyond their current knowledge or comprehension.
Not to be measured in depth.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "unfathomed" is derived from the combination of the prefix "un-" and the verb "fathom".
The verb "fathom" has Old English origins, derived from the Proto-Germanic word "fathamōną", which means "to encircle with the arms, embrace". Over time, "fathom" developed into the meaning of understanding or grasping the depth of something, particularly in relation to measuring the depths of the sea.
By adding the prefix "un-" to "fathom", it creates the word "unfathom", meaning something that cannot be understood or comprehended. Over time, "unfathomed" came to be used as an adjective to describe something that is not fully understood or explored.
