a word that describes a person or thing, for example big, red, and bright in a big house, red wine, and a bright idea “Reliable” is not an adjective that could be applied to my car.
NAmE//ˌædʒɪkˈtaɪvl//
adjective an adjectival phrase NAmE//ˌædʒɪkˈtaɪvəli//
adverb In “bread knife,” the word “bread” is used adjectivally.See adjective in the Oxford Advanced Learner's DictionaryCheck pronunciation: adjective