Adverbs and other adverbs

You can use an adverb to describe another adverb. In the following sentence, the adverb almost is modifying the adverb always (and they’re both modifying the adjective right):

The weather report is almost always right.

In fact, if you wanted to, you could use several adverbs to modify another adverb.

Huan sings rather enormously too loudly.

However, that often produces weak and clunky sentences like the one above, so be careful not to overdo it.