Untenable is defined as something that cannot be maintained or defended. If you have a weak argument that falls apart as soon as anyone expresses any skepticism, this is an example of when you have anuntenable argument. that cannot be held, defended, or maintained.
Eighteenth Amendment to the United States Constitution. The Eighteenth Amendment (Amendment XVIII) of the United States Constitution effectively established the prohibition of alcoholic beverages in the United States by declaring the production, transport, and sale of alcohol (though not the consumption or private possession) illegal.
From Wikipedia, the free encyclopedia. The National Prohibition Act, known informally as the Volstead Act, was enacted to carry out the intent of the Eighteenth Amendment, which established prohibition in the United States.n December 5, 1933, Utah became the 36th state to ratify the Twenty-first Amendment, which repealed the Eighteenth Amendment, voiding the Volstead Act, and restored control of alcohol to the states.