adverb
ad·verb
/ˈædˌvɚb/ noun , pl -verbs [ count ]
: a word that describes a verb, an adjective, another adverb, or a sentence and that is often used to show time, manner, place, or degree
In “arrived early,” “runs slowly,” “stayed home,” and “works hard” the words “early,” “slowly,” “home,” and “hard” are adverbs.
ad·ver·bi·al /ædˈvɚbijəl/ adj
an adverbial phrase
In some sentences the word “likely” is adverbial rather than adjectival.
the adverbial suffix “-ly”
ad·ver·bi·ally adv