The phrase "a less appropriate" is correct and usable in written English.
It can be used when comparing the appropriateness of two or more options, indicating that one is not as suitable as another.
Example: "In this context, using humor may be a less appropriate choice than a serious tone."
Alternatives: "a more unsuitable" or "a less fitting".
If we compare risk group classifications overall, for our RFS model compared with NPI, then of 112 recurrent cases, 34 (30%) were more appropriately classified by RFS (i.e., to a higher risk group), whereas 18 (16%) were assigned to a less appropriate group (lower), giving a net gain in classification appropriateness of 14% by RFS (P<0.01).
I can't think of a less appropriate analogy.
"Be safe and stay warm": has there ever been a less appropriate post-coital sign off than this?
It could not be a less appropriate setting – a sunny parallel universe – in which to consider Shannon's phenomenal achievement in having her dark, embattled, highly wrought fantasy, The Bone Season, taken on by Bloomsbury.
The much trumpeted Queen musical has arrived, and it would be hard to imagine a less appropriate vehicle for the band's music - far less for the anti-corporate mes sage writer Ben Elton seeks to superimpose.
Thus, ERCP is a less appropriate modality than MRCP for assessing santorinicele.
It remains difficult to determine if late administration of norepinephrine reflects a poor evaluation of the disease severity of the patient and if the higher mortality is related to a globally less appropriate management of the patients.
First, he appears to be facing the thinly-disguised wrath of a Met commissioner angry that he is being accused of an improperly contractual relationship with Neil Wallis, a former News of the World deputy editor, when the prime minister arguably insisted on an even less appropriate relationship with Coulson.
This makes the estimation of a practice population less appropriate for this age group, because the extrapolation to a larger group that never visits the general practitioner is not very useful.
"There is a real and present health risk to patients if they are steered toward a cheaper, but less appropriate, product.
At the same time, the snake's body feint is less likely to elicit a C-start for fish more distant from the snake's body, presumably making a predictive strike less appropriate.
