What are demonstrative adjectives? There are four words which can be used as demonstrative determiners. A demonstrative adjective is an adjective that points out a noun or nouns. They are specific in qualifying them. This, that, these, and those are the demonstrative adjectives, and a noun will always follow. Do not confuse demonstrative pronouns with demonstrative adjectives. They are identical, but a demonstrative pronoun stands alone, while a demonstrative adjective qualifies a noun.