The phrase "a much more rigid" is correct and usable in written English.
It can be used when comparing the rigidity of two or more things, emphasizing a significant increase in rigidity.
Example: "The new regulations are a much more rigid framework than the previous guidelines."
Alternatives: "significantly more rigid" or "far more rigid".
They can both complicate his political and foreign agenda, and set a much more rigid tone.
There is a much more rigid footballing hierarchy - in effect, three separate divisions within the Premiership.
And we adhere to that, but not all agencies do – some people have a much more rigid line, and believe that ethnicity is the crucial factor.
Paradoxically, the looser form of the rock musical is propelled by a much more rigid instrumentation derived from the ensemble used in pop-music recording, itself determined by studio techniques.
By the Postclassic, this had been codified into a much more rigid system closely resembling that of Japanese, in which a well-defined syllabary can supplement or even replace logograms.
"When I realised that a lot of the form of the book was to be to do with withholding information about what had happened, " says Kunzru, "then I was straight into the situation of needing a much more rigid kind of planning than I'd ever tried to do before - luckily coinciding with a new pin board".
A coat becomes much more rigid and brittle then.
Richard Wambach, marketing and advertising manager for Chelsea Modular in Marlboro, N.Y., north of New Paltz, said that since modular homes must be transported to the job site and then lifted off the trailer and set in place with a crane, a module would typically be much more rigid than a house built using traditional construction methods.
Diamond had always been assumed to be a special case because of its particular bonding pattern, which is much more rigid than the way atoms of a metal are held together, Jeanloz explains.
If you apply sudden force, like a knee hitting a head, or a car or a baseball bat, that sudden acceleration changes the brain into something much more rigid and prone to damage".
GP 21, Patient 19 (past depression on antidepressant) Despite this, others used much more rigid statements, often to deny a psychological component, for instance "You don't imagine kidney stones".
