Adjective phrase - Wikipedia
https://en.wikipedia.org/wiki/Adjective_phraseAn adjective phrase (or adjectival phrase) is a phrase the head of which is an adjective, almost any grammar or syntax textbook or dictionary of linguistics terminology defines the adjective phrase in a similar way, e.g. Kesner Bland (1996:499), Crystal (1996:9), Greenbaum (1996:288ff.), Haegeman and Guéron (1999:70f.), Brinton (2000:172f.), Jurafsky and Martin (2000:362).</ref> The adjective can initiate the phrase (e.g. fond of steak), conclude the phrase (e.g. very happy), …
Adjective phrase - English Grammar
https://www.englishgrammar.org/adjective-phrase27.08.2013 · Adjective phrase. A word group that has an adjective as its head is called an adjective phrase. Note that the adjective in this phrase may be accompanied by other words such as determiners, modifiers etc. Adjective phrases can go before a noun (attributive position). They can also go after a linking verb like be (predicative position).