Impossible to remove: irremovable boulders; irremovable obstacles. (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 "irremovable" in a sentence
"Plant and equipment may not always become a commercial success -- but they remain resident assets virtually irremovable from the country."
"On the other hand, Barzini manages to raise questions that still obsess many Italians, giving voice to problems and facets of the Italian character that seem irremovable from their DNA."
"Have Barack Obama and Hillary Clinton amended the Honduran constitution to make presidents irremovable?"