say it: uhn-BEE-tuh-buhl
unbeatable is an adjective meaning "hard to defeat". It carries 2 recorded senses.
incapable of being overcome or subdued
“an invincible army”
“her invincible spirit”
Definitions, synonyms and semantic relations for unbeatable 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.