She acted quickly to find a solution. They walked slowly through the woods. Gordon spoke loudly to Chief Crazy Horse. What you apparently see may be a mirage.
An adverb is a word that modifies a verb, adjective, clause or another adverb. They provide more information on these words, such as manner, time, place, frequency, degree, etc. Adverbs often have the termination "<em>-ly.</em>" However, they can also look exactly like adjectives (such as <em>fast</em>).