What describes the function of "indeed" in a sentence?

"Indeed" functions as a conjunctive adverb in a sentence. As a conjunctive adverb, it serves to connect two independent clauses while also adding an emphatic or affirming nuance to the statement it precedes. This term often reinforces or clarifies a preceding idea, indicating agreement or certainty.

For instance, in a sentence like "She is an exceptional student; indeed, her grades reflect her hard work," "indeed" emphasizes the truth of the first clause by affirming it in relation to the second clause. This role of reinforcing and linking thoughts is characteristic of conjunctive adverbs, distinguishing them from conjunctions, which primarily serve to join clauses or phrases without adding an independent meaning. As a result, "indeed" enhances the clarity and persuasiveness of the argument being presented.