Where does “unnavigableness” come from?

unnavigableness (English) comes from English unnavigable, from English navigable, from Middle French navigable, from Latin navigabilis, from Latin nāvigō, from Latin nāvis, from Proto-Italic naus, from German hinaus — out, outward.

unnavigableness (English): The quality of being unnavigable

Definitions

  1. The quality of being unnavigable

Ancestry of “unnavigableness”, step by step

unnavigableness traces back through two separate lines of ancestry.

via English unnavigable

StepLanguageWordMeaning
1Englishunnavigablenot navigable; impossible to sail through; that...
2EnglishnavigableCapable of being navigated; deep enough and wide...
3Middle Frenchnavigable
4Latinnavigabilisnavigable
5Latinnāvigōto sail, navigate, seafare, embark
6Latinnāvisship, boat, vessel; a fleet in the plural
7Proto-Italicnaus
8Germanhinausout
9Germanausout; over; finished; done; up; off
10Old High Germanūzout
11Proto-West Germanic*ūtout, outward
12Proto-Germanicūtout, outward
13Proto-Indo-Europeanúdout, outward

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Proto-Indo-European úd
unnavigableness — Etymology, Origin & Word History | Etymology Explorer