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

Digital communities can be profoundly meaningful, and the momentum behind creator content is now unstoppable. — Belonging Forum, Forbes.com, 22 July 2026

In our imagined scenario in which the Chargers are an unstoppable fantasy machine in 2026, Mitchell will be cartoonishly good. — Andy Behrens, New York Times, 21 July 2026

In business and in public life, Ackman comes across as a man riding an unstoppable winning streak. — Jeff John Roberts, Fortune, 20 July 2026

This is what happens when an immovable object (CTU) meets an unstoppable force (CPS’ financial crisis). — The Editorial Board, Chicago Tribune, 20 July 2026

Word History

First Known Use

1836, in the meaning defined above