say it: uhn-SHAY-kuh-buhl
unshakable is an adjective meaning "marked by firm determination or resolution; not shakable". It carries 2 recorded senses.
marked by firm determination or resolution; not shakable
“firm convictions”
“a firm mouth”
“steadfast resolve”
“a man of unbendable perseverence”
“unwavering loyalty”
without flaws or loopholes
“an ironclad contract”
“a watertight alibi”
“a bulletproof argument”
Definitions, synonyms and semantic relations for unshakable come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.