unstoppable

adjective

un·​stop·​pa·​ble ˌən-ˈstä-pə-bəl 

: incapable of being stopped

an unstoppable runaway truck

an unstoppable army

an unstoppable rise to power

unstoppably

ˌən-ˈstä-pə-blē 

adverb

Synonyms of unstoppable

• invincible
• indomitable
• unbeatable
• insurmountable
• unconquerable
• invulnerable
• impregnable
• undefeated
• bulletproof
• armored

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

Staley's charge for Okot is to be an unstoppable player with her size and athleticism. —Ethan Westerman, Arkansas Online, 8 Jan. 2026

Once receiver Rashee Rice returned from a six-game suspension, the Chiefs offense looked nearly unstoppable at times in the middle of the season, which included home blowout wins over the Las Vegas Raiders and Washington Commanders. —Jesse Newell, New York Times, 7 Jan. 2026

But Nedas Venckus, after missing all three of his first-quarter shots, was unstoppable in the second quarter. —Steve Millar, Chicago Tribune, 7 Jan. 2026

Meanwhile, the omniscient, just-the-facts-ma’am narration relates the days and times and events with an efficiency that speaks to us of the unstoppable nature of fate. —Bilge Ebiri, Vulture, 31 Dec. 2025

Word History

First Known Use

1836, in the meaning defined above