The phrase "almost unassailable" is correct and usable in written English.
It can be used to describe an argument, position, or viewpoint that is very strong and difficult to refute, but not entirely immune to criticism.
Example: "Her research provided an almost unassailable case for the benefits of renewable energy."
Alternatives: "nearly irrefutable" or "virtually unchallengeable."
But Labor has promised increased spending in both areas and has an almost unassailable parliamentary majority of 167 seats.
The assumption about playing at the Camp Nou is that the vast playing surface presents the home side with an almost unassailable advantage.
Yes, they have to deal in the world of facts and truth, but their opinions – and the way they express them – are almost unassailable.
Its president, Yasir Arafat, is an almost unassailable patriarch, whose faults are usually pointed out only indirectly, by attacks against the people around him.
Exercising his almost unassailable presidential powers, Moi began a campaign to discredit the former kingmaker, who traded his appointment as attorney general for the more vulnerable office of a cabinet minister in the newly created Ministry of Constitutional Affairs.
Barcelona, which has an almost unassailable lead in La Liga, handed out 90,000 red, blue and yellow flags to its fans to wave into the faces of the Real players as they entered the arena.
Its accuracy has made DNA evidence virtually unassailable.
Ryan Hall, who almost gave England an unassailable lead only to slip at the vital moment, added: "I think Steve has helped us endless amounts.
Vollmann's credentials in this respect are unassailable and almost unique, as few major writers in our time have voyaged as widely among the shunned and marginalized.
Angela Merkel, Germany's long-serving and apparently unassailable chancellor, was hailed almost as a modern-day Mother Teresa when she opened her borders in the summer to thousands of migrants advancing on Germany via Greece and the Balkans.
With more than three-quarters of the vote counted, the no campaign had established an unassailable lead of about 69%to31%1%, securing victory in almost every corner of the country.
