The phrase "an adjective of" is grammatically correct and can be used in written English.
It is typically used when describing the function or role of an adjective in a sentence. Example: The word "happy" is an adjective of emotion in this sentence.
France's rival clans of monarchists are a joke in a country where "republican" is an adjective of honour.
(I've never used flagitious, an adjective of obscure origin meaning "wicked"; maybe in the next campaign season).
Like Alfred Hitchcock's (and, for that matter, like Jean-Luc Godard's), his name has been turned into an adjective of somewhat ambiguous meaning.
Peel was never one for hype or eulogy, but somewhere within the lugubrious voice and deadpan delivery, I thought I heard a little note of excitement and perhaps even an adjective of praise.
According to his theory of value, value is not an adjective of the object but a feeling absolute, of which the object evaluated appears as an adjective, and his logic of alternation is a modern working out of the Jaina theories of anekantavada (non-absolutism) and syadvada (doctrine of "may be").
"In the North, 'quality' is an adjective of unqualified praise.
David Axelrod, Senator Barack Obama's chief adviser, has reached a rarefied status among big-name political strategists: The opposition has made an adjective out of his name.
For the third scene, he used the feminine form of an adjective to refer to himself.
A verb phrase may consist of an adjective or of a verb, often followed by its object or its complements or both.
In contrast, the POMS consisted of an adjective list of emotions with no direct reference to particular events in time.
That's not an adjective to apply to any of Ms. Brown's other pieces here.
