adj. That cannot be shaken or moved; unfaltering or unwavering.
adj. Having no errors or loopholes; unassailable.
the GNU version of the Collaborative International Dictionary of English
adj. Not capable of being shaken; firm; fixed.
The Century Dictionary and Cyclopedia
Incapable of being shaken. Also spelled unshakeable.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. marked by firm determination or resolution; not shakable
adj. without flaws or loopholes
Word Usage
"In a statement afterward, the president spoke directly to U.S. troops in Iraq, pledging what he called his unshakable commitment to securing peace and adding the stakes are simply too high to just give up."