Show, Don't Tell

It is axiomatic that in writing you should show rather than tell. This means fewer adjectives and more concrete words. Mark Twain notwithstanding, there are good adjectives and bad adjectives. Bad ones are opinions: ugly, terrible, gorgeous. Instead, describe objectively and let the reader make the conclusion. Show that something is ugly, terrible, gorgeous with a clever description. If your description can't lead the reader to your desired conclusion, it's not well written.

When an adjective is called for, make it a concrete, evocative one: jagged, icy, billowy, wrinkled, oily, bright.

The job of the writer is to put the reader in his story. That means fewer adjectives, and, when an adjective is called for, stronger, concrete ones.