An adverb is a word that modifies (describes) a verb (he sings loudly), an adjective (very tall), another adverb (ended too quickly), or even a whole sentence (Fortunately, I had brought an umbrella). Adverbs often end in -ly, but some (such as fast) look exactly the same as their adjective counterparts.Click to see full answer. Just so, can adverbs be used as adjectives?Words Used as Both Adjectives and Adverbs. There are several words which are used both as adjectives and as adverbs. Some adjectives formed by adding –ly to nouns are also used as adverbs. Examples are: early, daily, weekly, yearly, hourly, quarterly, half-yearly etc.Subsequently, question is, what do adverbs and adjectives have in common? Just like adjectives, adverbs are used to add detail to a sentence. More specifically, adverbs tell us how, when, or where something happened. In the example above, the word deeply describes how he was staring, so deeply is an adverb. Simply so, what are examples of adjectives and adverbs? In the following examples, the adjectives are red and the adverbs are blue: He’s a beautiful singer. – He sings beautifully. She’s a very quick runner. – She can run very quickly. He’s a careless writer. – He writes carelessly. She’s a good worker. – She works well. Do all adverbs end in ly? Formal Characteristics of Adverbs Because of their distinctive endings, these adverbs are known as -LY ADVERBS. However, by no means all adverbs end in -ly. Note also that some adjectives also end in -ly, including costly, deadly, friendly, kindly, likely, lively, manly, and timely.