An adverb is a part of speech used to modify a verb, adjective, another adverb, clause, sentence, or phrase. An adverb answers the questions of how, when, where, or to what extent something is done. In the case of 'loudly,' it describes the manner in which something is done with a sense of volume.
With adverbs, the -ly suffix is very common and denotes that the word is an adverb. This particular adverb can be used in tandem with verbs, adjectives, and other adverbs to describe a relative volume. It can also be used to describe the degree of intensity associated with an action.
1. 'She sang loudly so all the audience could hear her.'
2. 'He yelled loudly to get the attention of the room.'
3. 'Everyone spoke quietly, but one student spoke loudly.'
Loudly is an example of an adverb of manner, meaning it describes how an action is done. When using this adverb, it is important to be mindful of context and use cases - for example, the volume 'loudly' can mean different things depending on the context. In a classroom, it may be to some extent louder than in a library, for example.