incontestability

noun

The state or quality of being incontestable.

OriginEnglish contestability ← Middle English in- ← Latin in- →
Scrabble 23
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Meanings

nounincontestability (countable and uncountable, plural incontestabilities)

plural incontestabilities

  1. countableuncountableThe state or quality of being incontestable.
  2. UScountableuncountablelawThe state of having been registered as a trademark for more than five consecutive years without a challenge, and therefore conclusively presumed not to cause confusion with any other trademark, and to have acquired distinctiveness.

Origin

  1. Proto-Indo-European*né
  2. Proto-Indo-European*n̥-
  3. Proto-Italic*n̥-
  4. Latinin-
  5. Middle Englishin-
  6. Englishin-
  7. Englishcontestability
  8. Englishincontestability

From in- + contestability.

Full word history & related roots →
Cite this entry
APA

incontestability. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/incontestability

MLA

“incontestability.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/incontestability. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “incontestability,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/incontestability.

Source: incontestability on Wiktionary, CC BY-SA 4.0.