Adjective: unshakable ,ún'shey-ku-bul
- Marked by firm determination or resolution; not shakable
"unshakable convictions";
- firm, steadfast, steady, stiff, unbendable, unfaltering, unwavering, unshakeable
- Without flaws or loopholes
"Her unshakable logic won the debate";
- unassailable, watertight, bulletproof, ironclad, unshakeable
See also: incontestable, incontestible, resolute