Adjectives - Grammar Monster
https://www.grammar-monster.com/lessons/adjectives.htmAdjectives are words that describe nouns or pronouns. They are 'describing words.' ('Old,' 'green,' and 'cheerful' are examples of adjectives.) This page has lots of examples of the different types of adjectives, an explainer video, and an interactive test. It also highlights the differences between descriptive adjectives and determiners.
559 Synonyms & Antonyms of SIMPLE - Merriam-Webster
https://www.merriam-webster.com/thesaurus/simpleSynonyms for SIMPLE: bald, bare, naked, plain, plain-vanilla, unadorned, undecorated, unembellished; Antonyms for SIMPLE: adorned, decorated, embellished, fancy ...