Word.ws English Dictionary

undownable

/ʌnˈdaʊn.ə.bəl/

undownable adjective: undeniably important; which cannot be played down or ignored.

Adjective

undownable (not comparable)

  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
  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)

Examples of undownable in a sentence

  • […]the truth which came home with such undownable conviction[…]1998, Frank N. Riale, Sinless, Sickless, Deathless Life:
  • 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):

Origin of undownable

From un- + downable.

Questions about undownable

What does undownable mean?
Undownable means undeniably important; which cannot be played down or ignored.
How do you use undownable in a sentence?
[…]the truth which came home with such undownable conviction[…]
What part of speech is undownable?
Undownable is an adjective.
How do you pronounce undownable?
Undownable is pronounced /ʌnˈdaʊn.ə.bəl/ (UK).

Words near undownable in the dictionary

  1. undovetailed
  2. Undowah
  3. undoweled
  4. undowelled
  5. undowered
  6. undownable
  7. undowned
  8. undownload
  9. undownloadable
  10. undownloaded
  11. undownloading

Source and license

Adapted from Wiktionary: undownable (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vealhurl-undownable.wav.

Cite this entry: “undownable.” Word.ws, https://word.ws/undownable. Based on Wiktionary, CC BY-SA 4.0.