What context can I use each word in?
Learn when and how to use these words with these examples!
invalidity
Example
The contract was declared invalid due to a mistake in the terms. [invalid: adjective]
Example
The court ruled that the will was of no effect and had no legal validity. [validity: noun]
nullity
Example
The marriage was declared a nullity due to fraud on the part of one of the parties. [nullity: noun]
Example
The contract was found to be a nullity because it was signed under duress. [nullity: noun]
Good things to know
Which word is more common?
Invalidity is more commonly used than nullity in everyday language.
What’s the difference in the tone of formality between invalidity and nullity?
Nullity has a more formal and technical connotation than invalidity, which can be used in both formal and informal contexts.