adjective. relating to or being in apposition.
1. Noun, singular or mass If the presence of the appositive is needed to understand the identity of the noun it modifies, then it is called a restrictive appositive, and it is not set off with commas. 2. Adjective The simple sentence is “The boy was outside my house,” but all of the adjectives -- red-headed, tall and hungry -- sit in the appositive to describe him.