not capable of being stopped; extremely forceful
WordReference Random House Unabridged Dictionary of American English © 2025
un•stop•pa•ble
(un stop′ə bəl),USA pronunciation adj.
un•stop′pa•bly, adv.
- that cannot be stopped or surpassed;
unbeatable:an unstoppable ball team.
- un-1 + stoppable 1830–40
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