Impossible to account for; inexplicable: unaccountable absences. (adjective)
Free from accountability; not responsible: an executive unaccountable to anyone but the president. (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 "unaccountable" in a sentence
"Charles too much of the little lady's society; but he was very fond of her, regarding her with an odd mixture of curiosity and amusement, much entertained with watching what he called her unaccountable manners, and greatly flattered when he could succeed in attracting her notice."
"And all of these imbeciles remain unaccountable after refusing to resign in light of their own struggles with morality."
"Paul contends his case will expose "the institutional culture of corruption embraced by the Clinton leadership of the Democratic Party," which seeks to attain "unaccountable power for the Clintons at the expense of the rule of law and respect for the constitutional processes of government.""