The phrase "a less ambiguous" is correct and usable in written English.
It can be used when you want to describe something that is clearer or more specific than another option.
Example: "To improve communication, we need to provide a less ambiguous explanation of the project requirements."
Alternatives: "a clearer" or "a more precise".
Among companies seemingly on the verge of omnipotence a decade ago, when the term "globalization" carried a less ambiguous message, Coca-Cola, Disney, the Gap and Nike have also encountered unexpected turbulence in recent years.
But that trial measured patient survival, a less ambiguous yardstick than determining whether tumors have become worse.
The move added to the pressure on Prime Minister Tony Blair's government to adopt a less ambiguous policy about joining the single currency.
On a less ambiguous note, Mary R. Harte's untitled photographic transfer print expresses in visual terms the fragrance of flowers borne on the breeze.
A less ambiguous ending wouldn't have hurt, but the audience, among them volubly enthusiastic contingents of friends and family, plainly didn't object.
It is tempting to view the 1940's as a less ambiguous, simpler time, in which the moral choices were clearer and the cultural responses to them emphatically and intuitively appropriate.
And, you know, therefore involve the patient and everything in a way that's a bit less ambiguous than it is now.
In a follow-up, he wrote that Williams was a product of N.F.L. culture, not a rogue pioneer, and that this episode should be a springboard "to look to a future in which the NFL can evolve to a healthier, less ambiguous place".
With two eyes (and a normal binocular visual system) (Sacks, 2006), the twigs are seen as a much less ambiguous 3D structure.
Abroad, Mrs Thatcher, as she was always known, was seen in a far less ambiguous light.
16 This lack of consensus defined approach to this problem has led to an argument for less ambiguous terminology, 17 and we propose that 'multidrug' therapy is used to link in with the standard approach to two or more conditions, which is 'multimorbidity'multimorbidity
