adverbial

adverbial (adverbial): syntactic function at clause level. Adverbials may be obligatory, though most of them are not. However, they can be added freely to any clause pattern. There are three main types: Adjuncts, conjuncts, and disjuncts. Adverbials can be realized by adverbs, adverb phrases, noun phrases, prepositional phrases, or subordinate clauses.