explanatory

/ɪkˈsplænəˌtɔri/
adjective
  1. Serving or intended to explain something; giving details to make something clear.
    • The manual includes explanatory diagrams that show how to assemble the furniture.
    • The teacher provided an explanatory note to help students understand the complex diagram.
    • Each chapter begins with an explanatory paragraph that summarizes the main ideas.
Antonyms