An example of an adverbial phrase is a clause which describes a verb (i.e. to say “Before Aunt Mabel came over...” instead of “Yesterday”).
- of an adverb
- having the nature or function of an adverb
- used to form an adverb: an adverbial suffix
(comparative more adverbial, superlative most adverbial)
- (grammar) of or relating to an adverb
adverb + -ial.