When the adverb ends in -ly, it needs no hyphen (e.g. highly regarded). If the adverb and adjective follow the noun instead of preceding it, you can also leave off the hyphen. We use adverbs to modify or describe words such as verbs, adjectives, and other adverbs. ... In many cases, we use a hyphen to link these two words.

What are the rules of adverbs?

Adverbs are often formed by adding the letters “-ly” to adjectives. This makes it very easy to identify adverbs in sentences. There are many exceptions to this rule; everywhere, nowhere, and upstairs are a few examples. An adverb can be used to modify an adjective and intensify the meaning it conveys.

Why you shouldn't use adverbs?

Overuse of adverbs is the hallmark of lazy, cluttered writing. Good dialogue should use strong verbs rather than '-ly' adverbs. Often the adverbs mean the same as the verb and become redundant, leading to messy prose. The most common (over)use of adverbs is to modify the verb said, e.g. "I'm leaving," he said angrily.