undownable
adjUK, US /ʌnˈdaʊn.ə.bəl/
Etymology From un- + downable.
1
Rare Undeniably important; which cannot be played down or ignored.
- If ever there was an example of sheer pluck and undownable determination it is right here[…]1923, Interstate Cotton Seed Crushers' Association, Official Monthly Bulletin:
- There is the undownable legend that[…]1930, Charles J. V. Murphy, Parachute:
1 more example
- […]the truth which came home with such undownable conviction[…]1998, Frank N. Riale, Sinless, Sickless, Deathless Life:
2
Rare Invincible; which cannot be brought down or overcome.
- The SR-71 is claimed to be undownable by virtue of its altitude and speed.1998, Andrew Pavacic, “Why are our ASMs smaller than theirs?”, in sci.military.naval (Usenet):
- […]this paranoic attempt to discredit the credible, and down the undownable.1998, Edmond Wollmann, “A Challenge to Lazzwaldo AKA anonym or whatever it is”, in sci.skeptic (Usenet):
1 more example
- I did not go as far as that either. I only went as far as stating that an American warplane is almost undownable and an American warship is unsinkable.1999, kinara, “Taiwan is NOT able to defeat any invasion”, in soc.culture.china (Usenet):