Invalid; untenable: an indefensible assumption. (adjective)
Vulnerable to physical attack: indefensible borders. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "indefensible" in a sentence
"During a visit to Washington last month, Prime Minister Benjamin Netanyahu publicly clashed with President Obama, saying Israel would not return to the 1967 borders which he described as "indefensible.""
"The prime minister's unequivocal apology in Parliament for what he called the indefensible shootings in Londonderry in 1972 was universally praised for its candour and courage."
"WASHINGTON -- Israel's prime minister promised to present his vision for an Israeli-Palestinian peace in a speech before U.S. lawmakers on Tuesday, but vowed his country would not return to mid-1967 borders that he termed "indefensible.""