As nouns the difference between intestability and untestability
is that intestability is the state or characteristic of being legally disqualified from making a will, as by reason of being under the age of majority or mentally incompetent while untestability is the quality of being untestable.
intestability
English
Noun
(-)
(legal) The state or characteristic of being legally disqualified from making a will, as by reason of being under the age of majority or mentally incompetent.
Synonyms
* intestableness
Related terms
* intestable
References
*Oxford English Dictionary , 2nd ed., 1989.