Annotates is a verb that refers to adding explanatory notes or comments to a document, text, or other piece of information. Synonyms for annotates include remark, comment, explicate, elucidate, clarify, explain, interpret, note, and highlight. Each of these words suggests the act of adding information or commentary to a piece of writing. While they are similar to annotates, they may also suggest slightly different shades of meaning, such as emphasis, specificity, or interpretation. Depending on the context, one of these synonyms may be more appropriate than another when it comes to conveying a particular nuance or intent in the added commentary.