unstoppable

adjective

un·​stop·​pa·​ble ˌən-ˈstä-pə-bəl 

: incapable of being stopped

an unstoppable army

an unstoppable rise to power

unstoppably

ˌən-ˈstä-pə-blē 

adverb

Synonyms

• bulletproof
• impregnable
• indomitable
• insuperable
• insurmountable
• invincible
• invulnerable
• unbeatable
• unconquerable

Examples of unstoppable in a Sentence

At this point in the campaign, he appears to be unstoppable.

at this point she's so far ahead in the polls that she's unstoppable

Recent Examples on the Web

Standing on the mound after 99 pitches Friday night at Sutter Health Park, A’s starting pitcher Jeffrey Springs was still looking unstoppable after holding the opposition scoreless for seven innings. —Sean Campbell, Sacbee.com, 21 June 2025

The Lakers built one of basketball’s most unstoppable machines — Jerry West in the front office, Pat Riley on the sideline and Johnson, Kareem Abdul-Jabbar, James Worthy, Byron Scott and Michael Cooper flying on the break. —Dan Woike, Los Angeles Times, 20 June 2025

Now might be a good time to get one of these subscriptions because, for non-paying users, YouTube is reportedly planning to increase the length of unstoppable ads from the existing 15 seconds to 30. —Jibin Joseph, PC Magazine, 19 June 2025

Sinners, Ryan Coogler's unstoppable period thriller, was knocked down to the 10th spot on the domestic charts this weekend, but continues to fight the good fight. —Ryan Coleman, EW.com, 15 June 2025

Word History

First Known Use

1836, in the meaning defined above