unstoppable

[uhn-stop-uh-buhl] / ʌnˈstɒp ə bəl /

ADJECTIVE

irrepressible

Synonyms

STRONGEST

boisterous buoyant ebullient exuberant rebellious uncontrollable unrestrained

WEAK

bubbling bubbly enthusiastic inextinguishable insuppressible rhapsodical unconstrained uncontainable unmanageable unquenchable unrestrainable unruly

Antonyms

STRONGEST

controllable restrained

WEAK

depressed despondent grave

ADJECTIVE

relentless

Synonyms

STRONGEST

determined dogged ferocious fierce harsh implacable inexorable rigorous ruthless single-minded uncompromising unforgiving unrelenting unyielding

WEAK

adamant bound bound and determined dead set on go for broke grim hang in hang-tough hard inflexible inhuman mortal obdurate pitiless remorseless rigid stiff stop-at-nothing strict stringent unappeasable unbending undeviating unflinching vindictive

Antonyms

STRONGEST

compassionate easy flexible gentle irresolute kind lenient merciful mild nice nonviolent peaceful remorseful sympathetic tame tender yielding

WEAK

ending intermittent stopping understanding

ADJECTIVE

relentless

Synonyms

STRONGEST

incessant nonstop persistent punishing sustained tenacious unflagging unrelenting unremitting

WEAK

pertinacious unabated unbroken unfaltering unrelieved

Antonyms

STRONGEST

intermittent relenting surrendering yielding

WEAK

ending kind merciful stopping sympathetic understanding

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

From a grotesque 230% valuation gap to a ticking energy crisis, this unstoppable market is more fragile than it looks.

From The Wall Street Journal • May 22, 2026

“All Her Fault” “Not the strongest field this year, though Richard Gadd’s ‘Half Man’ and Ryan Murphy’s ‘Love Story’ seem unstoppable.

From Los Angeles Times • May 19, 2026

This was not just another win for the seemingly unstoppable Red Roses.

From BBC • May 17, 2026

But he’s powered by the unstoppable energy of being 17 years old, so he pushes on with his mission, which is to separate a billionaire from $25 million in cryptocurrency.

From The Wall Street Journal • May 14, 2026

Einstein quickly realized that with atomic bombs, Adolf Hitler would be absolutely unstoppable.

From "Bomb" by Steve Sheinkin

unstoppable

Example Sentences

Related Words