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

Under this alignment of eloquent Mercury and unstoppable Mars in your in-depth 8th house, those connections could use a bit of extra attention. —Tarot.com, New York Daily News, 15 Mar. 2026

The performance is dynamic, but the McConaissance proves to be an unstoppable force of nature. —Joe Reid, Vulture, 13 Mar. 2026

Bailee Broward also made some outside shots, giving the Cardinals unstoppable inside-outside options. —Eric Sondheimer, Los Angeles Times, 13 Mar. 2026

In the superb production of the solo play Every Brilliant Thing opening tonight on Broadway, the unstoppable Daniel Radcliffe plays the troubled but tenacious son of a woman whose long stretches of bedridden depression are broken only by her frequent outbursts of self-harm. —Greg Evans, Deadline, 12 Mar. 2026

Word History

First Known Use

1836, in the meaning defined above