- lack of validity.
Origin of invalidity1
Origin of invalidity2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for invalidity
The invalidity of "the principle of causality" is asserted by this author.Christianity and Greek Philosophy
Benjamin Franklin Cocker
Here again it must be remarked that origin, does not carry validity or invalidity with it.Illusions
That is indicated by the power to set aside prejudices as soon as their invalidity is demonstrated.Criminal Psychology
Doubtless many another archaic statute is of a like invalidity did but some protestful person choose to take issue therewith.Dickens' London
Neither shall we be very careful to inquire into the validity or invalidity of the charges against his kinsfolk.
Word Origin and History for invalidity
1540s, from Latin invalidatus (see invalid (adj.)).
Online Etymology Dictionary, © 2010 Douglas Harper