Also found in: Dictionary, Thesaurus, Wikipedia.

UNINTELLIGIBLE. That which cannot be understood.
     2. When a law, a contract, or will, is unintelligible, it has no effect whatever. Vide Construction, and the authorities there referred to.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in periodicals archive ?
An unintelligible, pretentious, schlock-o-rama - once voted number two in a list of the 50 Worst Movies Ever Made - it so besmirched the memories of the chilling 1973 original that it prompted projectile vomiting among audiences.
Summary: For some the Syrian war is an unintelligible quagmire.
Vincent was given the name Don Vito for his unintelligible speech, similar to The Godfather's Don Vito Corleone, reports HollywoodLife.
Participants said some of the key reasons why Macedonia's judiciary is not independent were the unintelligible laws passed in a rush, often in conflict with each other and inapplicable, the political bias in appointing and promoting judges by the Judicial Council, this Council's self promotion into the fourth judicial institution, above the Supreme Court, the introduction of an investigative body against judges that does not account to anyone in the country, and the government control of courts through the money paid in installments.
With unintelligible budget reports, there is a real danger that councillors will just vote budgets through without fully comprehending their consequences.
Sadly, however, it won't translate those unintelligible text-speak replies.
Twenty years ago, your Liverpool accent would have been unintelligible."
The document is written in Arabic and the English is unintelligible. The accident report should not be a declaration of guilt or innocence.
unintelligible, comic perhaps, a poor, strutting player, signifying
Accompanying the book is a CD featuring the voices of the Krays, which I found largely unintelligible due to background noise.
Some of these displays are so full of "chart-junk" they are virtually unintelligible. I would expect this from a mainstream media publication, but not from a journal targeting the engineering community.