Invalidity
Invalidity noun - Illogicality as a consequence of having a conclusion that does not follow from the premisses.
Illegality and invalidity are semantically related. In some cases you can use "Illegality" instead a noun "Invalidity".
Illegality
Illegality noun - Unlawfulness by virtue of violating some legal statute.
Invalidity and illegality are semantically related. Sometimes you can replace term "Invalidity" with "Illegality", this nouns are similar.
Mutual synonyms
Cite this Source
Illegality and Invalidity. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/invalidity/illegality
Invalidity & Illegality. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/invalidity/illegality>.
Illegality or Invalidity. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/invalidity/illegality.
Google Ngram Viewer shows how "invalidity" and "illegality" have occurred on timeline