Invalidity

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The state of being invalid; lack of validity. countable, uncountable
  2. 2
    illogicality as a consequence of having a conclusion that does not follow from the premisses wordnet

Synonyms

All synonyms
debilitydelicacydelicate healthevilnessexhaustionfailure

Etymology

From invalid + -ity.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.