Where does “unfathomless” come from?

unfathomless (English) comes from English unfathomed, from English Un-, from Middle English un-, from Old English un-, from Proto-West Germanic un-, from Proto-Germanic un-, from Proto-Indo-European n̥-, from Proto-Indo-European ne — not.

unfathomless (English): fathomless

Definitions

  1. fathomless

Ancestry of “unfathomless”, step by step

unfathomless traces back through two separate lines of ancestry.

via English unfathomed

StepLanguageWordMeaning
1EnglishunfathomedOf unknown depth; Not explored or understood
2EnglishUn-not
3Middle Englishun-
4Old Englishun-negation or absence of: un-, non-; bad; forms...
5Proto-West Germanicun-not, un-
6Proto-Germanicun-not, un-
7Proto-Indo-Europeann̥-not, un-
8Proto-Indo-Europeannenot

via English fathomless

StepLanguageWordMeaning
1EnglishfathomlessVery deep (especially of water deeper than a lead line can measure); bottomless, immeasurable
2English-less(something); without (something). Added usually to a noun to form an adjective signifying a lack of that noun
3Middle English-lesLacking (something); without (something)
4Turkish-lewith, shortened form of ile; by, shortened form...
5Turkishilewith; and
6Ottoman Turkishایلهby
7Old Anatolian Turkishاِیلَه
8Proto-Turkicbilewith, together, also
Every word from Proto-Indo-European neEvery word from English Un-Every word from Proto-Indo-European n̥-
unfathomless — Etymology, Origin & Word History | Etymology Explorer