The phrase "a complete capitulation" is correct and usable in written English.
It can be used to describe a situation where someone fully surrenders or gives in to demands or circumstances.
Example: "After months of negotiations, the company finally reached a complete capitulation to the union's demands."
Alternatives: "total surrender" or "full concession".
It's a complete capitulation".
"I think it's a disaster, a complete capitulation," said Sami Kermanian, a real estate investor and former secretary general of the Iranian Jewish Federation.
Without a complete capitulation by House Republicans, large sections of the government would close, hundreds of thousands of workers would be furloughed without pay, and millions more would be asked to work for no pay.
Just when it looked like only a complete capitulation from Jordan Spieth, or sheer brilliance from elsewhere, would deny him the maiden major success he would cherish so much, a snap warning was fired from the golfing gods.
Gainsbourg arrived on the scene in the nick of time: by the early 60's, the chanson was under siege, menaced by the popularity of Johnny Hallyday, whose Franglais versions of hits like "Let's Twist Again" were a complete capitulation to American music, and a hideous parody of it.
"This is just a complete capitulation of the last remnants of any confidence in 2008.
The rest of it is a nearly complete capitulation to the hostage-taking demands of Republican extremists.
A relic of the Blair government's complete capitulation to the Bush administration over the "war on terror", the treaty under which the US sought McKinnon's extradition is notably lacking in due process protections – even for British citizens accused of crimes while on British soil.
With Democratic senators united behind him, Reid dispatched the patchwork legislative offers being tossed his way, setting the stage for a complete GOP capitulation.
The deal wasn't perfect, he insisted, but it was the best that could realistically be hoped for; anyone who believed that a better one was possible – one perforce involving Iran's complete capitulation – was living in cloud cuckoo land.
The outcome of the recent negotiations is described as complete capitulation.
