"unstoppable power" is correct and usable in written English.
It is often used to describe a force or influence that cannot be stopped or overcome. Example: The hurricane's unstoppable power destroyed homes and caused massive flooding along the coast.
Another was "The Starfish and the Spider: The Unstoppable Power of Leaderless Organizations," by Ori Brafman and Rod A. Beckstrom.
Torres shrugged him off and lashed a shot of unstoppable power into the top of the net.
You have only to remember the birth of rock 'n' roll in the United States to realize the unstoppable power of popular culture in the mass media.
Or maybe Charlotte Higgins, of the Guardian, is right: "The only explanation is the currently unstoppable power of the Austen cult, fuelled by Colin Firth in a wet blouse, by Andrew Davies's adaptations, and by Hollywood".
Organizers have promoted "Rules for Radicals," by Saul D. Alinsky, as a primer on community organizing tactics, and "The Starfish and the Spider: The Unstoppable Power of Leaderless Organizations," by Ori Brafman and Rod A. Beckstrom, an argument for the strength of movements built around ideas rather than leaders.
The V-Bot, according to toymaker Johnny Lightning, is "a giant super hero with unstoppable power".
But scientific and technical reports, advocacy measures and pressures on companies were lost among the apparently unstoppable powers of real estate, agriculture and industry development.
But for unrestrained malice and unstoppable powers of emotional destruction, I am tempted to suggest that Violet puts all the rest in the shade.
The five-time former champion began the match looking unstoppable, powering winners off both wings past Giraldo, and in a little over 20 minutes he had moved 5-1 ahead.
At first, they seemed an unstoppable force, driven by the power of demographics — about 60 percent of the population across the Arab world is under the age of 30.
"Anyone who is being honest with you will tell you they have no earthly idea of what's going to happen caucus night," a former chair of the Iowa Republican party told the National Journal, which wondered whether Trump's apparent abandonment of traditional strategies to get the vote out would be justified by the hitherto unstoppable celebrity power of his campaign.
