Where does “unnavigable” come from?

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

unnavigable (English): not navigable; impossible to sail through; that...

Definitions

  1. not navigable; impossible to sail through; that...

Ancestry of “unnavigable”, step by step

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

Words derived from “unnavigable

Every word from Proto-Indo-European úd